PRICELINE COM INC
S-1, 1998-12-23
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<PAGE>
   AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON DECEMBER 23, 1998
 
                                                      REGISTRATION NO. 333-
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
 
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                            ------------------------
 
                                    FORM S-1
                             REGISTRATION STATEMENT
                                     UNDER
                           THE SECURITIES ACT OF 1933
                            ------------------------
 
                           PRICELINE.COM INCORPORATED
             (Exact Name of Registrant as Specified in Its Charter)
 
<TABLE>
<S>                              <C>                            <C>
           DELAWARE                          4541                  06-1528493
 (State or Other Jurisdiction    (Primary Standard Industrial   (I.R.S. Employer
              of                 Classification Code Number)     Identification
Incorporation or Organization)                                        No.)
</TABLE>
 
                         ------------------------------
 
                              FIVE HIGH RIDGE PARK
                          STAMFORD, CONNECTICUT 06905
                                 (203) 705-3000
  (Address, Including Zip Code, and Telephone Number, including Area Code, of
                   Registrant's Principal Executive Offices)
                         ------------------------------
 
                             MELISSA M. TAUB, ESQ.
              SENIOR VICE PRESIDENT, GENERAL COUNSEL AND SECRETARY
                           PRICELINE.COM INCORPORATED
                              FIVE HIGH RIDGE PARK
                          STAMFORD, CONNECTICUT 06905
                                 (203) 705-3000
 (Name, Address, including Zip Code, and Telephone Number, including Area Code,
                             of Agent For Service)
                         ------------------------------
 
                                   COPIES TO:
 
      PATRICIA MORAN CHUFF, ESQ.                     ALAN DEAN, ESQ.
 SKADDEN, ARPS, SLATE, MEAGHER & FLOM             DAVIS POLK & WARDWELL
                 LLP                               450 LEXINGTON AVENUE
          ONE RODNEY SQUARE                      NEW YORK, NEW YORK 10017
      WILMINGTON, DELAWARE 19801                      (212) 450-4000
            (302) 651-3000
 
                         ------------------------------
 
    APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE TO THE PUBLIC: As soon as
practicable after the effective date of this Registration Statement.
 
    If any of the securities being registered on this form are to be offered on
a delayed or continuous basis pursuant to Rule 415 under the Securities Act of
1933 check the following box. / /
 
    If this form is filed to register additional securities for an offering
pursuant to Rule 462(b) under the Securities Act, check the following box and
list the Securities Act registration statement number of the earlier effective
registration statement number for the same offering. / / ______
    If this form is a post-effective amendment filed pursuant to Rule 462(c)
under the Securities Act, check the following box and list the Securities Act
registration statement number of the earlier effective registration statement
for the same offering. / / ______
    If this form is a post-effective amendment filed pursuant to Rule 462(d)
under the Securities Act, check the following box and list the Securities Act
registration statement number of the earlier effective registration statement
for the same offering. / / ______
    If delivery of the prospectus is expected to be made pursuant to Rule 434,
please check the following box. / /
                         ------------------------------
 
                        CALCULATION OF REGISTRATION FEE
 
<TABLE>
<CAPTION>
                                                                               PROPOSED MAXIMUM
                           TITLE OF EACH CLASS OF                             AGGREGATE OFFERING      AMOUNT OF
                        SECURITIES TO BE REGISTERED                                PRICE(1)        REGISTRATION FEE
<S>                                                                           <C>                 <C>
Common Stock, par value $0.01 per share.....................................     $115,000,000          $31,970
</TABLE>
 
(1) Estimated solely for the purpose of computing the amount of the registration
    fee pursuant to Rule 457(o) under the Securities Act of 1933.
                            ------------------------
 
    THE REGISTRANT HEREBY AMENDS THIS REGISTRATION STATEMENT ON SUCH DATE OR
DATES AS MAY BE NECESSARY TO DELAY ITS EFFECTIVE DATE UNTIL THE REGISTRANT SHALL
FILE A FURTHER AMENDMENT WHICH SPECIFICALLY STATES THAT THIS REGISTRATION
STATEMENT SHALL THEREAFTER BECOME EFFECTIVE IN ACCORDANCE WITH SECTION 8(A) OF
THE SECURITIES ACT OF 1933 OR UNTIL THE REGISTRATION STATEMENT SHALL BECOME
EFFECTIVE ON SUCH DATE AS THE SECURITIES AND EXCHANGE COMMISSION, ACTING
PURSUANT TO SAID SECTION 8(A), MAY DETERMINE.
 
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
<PAGE>
THE INFORMATION IN THIS PROSPECTUS IS NOT COMPLETE AND MAY BE CHANGED. WE MAY
NOT SELL THESE SECURITIES UNTIL THE REGISTRATION STATEMENT FILED WITH THE
SECURITIES AND EXCHANGE COMMISSION IS EFFECTIVE. THIS PROSPECTUS IS NOT AN OFFER
TO SELL THESE SECURITIES AND WE ARE NOT SOLICITING OFFERS TO BUY THESE
SECURITIES IN ANY STATE WHERE THE OFFER OR SALE IS NOT PERMITTED.
<PAGE>
PROSPECTUS (SUBJECT TO COMPLETION)
ISSUED DECEMBER 23, 1998
 
                                           SHARES
                           PRICELINE.COM INCORPORATED
                                  COMMON STOCK
                             ---------------------
 PRICELINE.COM INCORPORATED IS OFFERING     SHARES OF ITS COMMON STOCK. THIS IS
OUR INITIAL PUBLIC OFFERING AND NO PUBLIC MARKET CURRENTLY EXISTS FOR OUR
         SHARES. WE ANTICIPATE THAT THE INITIAL PUBLIC OFFERING
                 PRICE WILL BE BETWEEN $    AND $    PER SHARE.
 
                            ------------------------
 
PRICELINE.COM INCORPORATED INTENDS TO APPLY FOR QUOTATION OF THE COMMON STOCK ON
              THE NASDAQ NATIONAL MARKET UNDER THE SYMBOL "PRLN."
 
                            ------------------------
 
                 INVESTING IN THE COMMON STOCK INVOLVES RISKS.
                    SEE "RISK FACTORS" BEGINNING ON PAGE 2.
 
                             ---------------------
 
                              PRICE $     A SHARE
 
                             ---------------------
 
<TABLE>
<CAPTION>
                                                                                UNDERWRITING
                                                                PRICE TO       DISCOUNTS AND      PROCEEDS TO
                                                                 PUBLIC         COMMISSIONS         COMPANY
                                                            ----------------  ----------------  ----------------
<S>                                                         <C>               <C>               <C>
PER SHARE.................................................                 $                 $                 $
TOTAL.....................................................  $                 $                 $
</TABLE>
 
    THE SECURITIES AND EXCHANGE COMMISSION AND STATE SECURITIES REGULATORS HAVE
NOT APPROVED OR DISAPPROVED THESE SECURITIES, OR DETERMINED IF THIS PROSPECTUS
IS TRUTHFUL OR COMPLETE. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL
OFFENSE.
 
    PRICELINE.COM INCORPORATED HAS GRANTED THE UNDERWRITERS THE RIGHT TO
PURCHASE UP TO AN ADDITIONAL       SHARES OF COMMON STOCK TO COVER
OVER-ALLOTMENTS. MORGAN STANLEY & CO. INCORPORATED EXPECTS TO DELIVER THE SHARES
OF COMMON STOCK TO PURCHASERS ON            , 1999.
 
                            ------------------------
 
MORGAN STANLEY DEAN WITTER
 
              BANCBOSTON ROBERTSON STEPHENS
 
                            DONALDSON, LUFKIN & JENRETTE
 
                                           MERRILL LYNCH & CO.
 
           , 1999
<PAGE>
                                    [PHOTOS]
 
priceline.com and the priceline.com logo are service marks of priceline.com
Incorporated.
<PAGE>
                               TABLE OF CONTENTS
<TABLE>
<CAPTION>
                                                    PAGE
                                                  ---------
<S>                                               <C>
Prospectus Summary..............................          1
Risk Factors....................................          2
Special Note Regarding Forward-Looking
  Statements....................................         18
Use of Proceeds.................................         19
Dividend Policy.................................         19
Capitalization..................................         20
Dilution........................................         21
Selected Combined Financial Data................         22
Management's Discussion and Analysis of
  Financial Condition and Results of
  Operations....................................         23
Business........................................         30
 
<CAPTION>
                                                    PAGE
                                                  ---------
<S>                                               <C>
Management......................................         48
Certain Transactions............................         59
Principal Stockholders..........................         62
Description of Capital Stock....................         64
Certain United States Federal Tax Consequences
  to Non-U.S. Holders...........................         66
Shares Eligible for Future Sale.................         68
Underwriters....................................         70
Legal Matters...................................         73
Experts.........................................         73
Additional Information..........................         74
Index to Financial Statements...................        F-1
</TABLE>
 
    Our principal executive offices are located at Five High Ridge Park,
Stamford, Connecticut 06905, and our telephone number is (203) 705-3000. Our
World Wide Web site is www.priceline.com. The information in the Web site is not
incorporated by reference into this Prospectus.
 
    In this Prospectus, the terms "Company," "priceline.com," "we," "us" and
"our" refer to priceline.com Incorporated and "Common Stock" refers to the
common stock, par value $.01 per share, of the Company. Our financial statements
for all relevant periods are presented on a combined basis with the financial
statements of Priceline Travel, Inc., a separate company owned by Mr. Jay S.
Walker, our Founder and Vice Chairman. Priceline Travel owns our travel agency
license and will be merged with the Company prior to the consummation of this
offering.
 
    This Prospectus includes statistical data regarding our company, the
Internet and the industries in which we compete. Such data are based on our
records or are taken or derived from information published or prepared by
various sources, including International Data Corporation, a provider of market
and strategic information for the information technology industry, and the
Opinion Research Corporation, a market research organization which we retain to
measure consumer awareness of our brand and services and of other leading
Internet brands and their products.
 
    You should rely only on the information contained in this Prospectus. We
have not authorized anyone to provide you with information different from that
which is contained in this Prospectus. We are offering to sell shares of common
stock and seeking offers to buy shares of common stock only in jurisdictions
where offers and sales are permitted. The information contained in this
Prospectus is accurate only as of the date of this Prospectus, regardless of the
time of delivery of this Prospectus or of any sale of the common stock.
 
    Until       , 1999 (25 days after the date of this Prospectus), all dealers
that buy, sell or trade in our Common Stock, whether or not participating in
this offering, may be required to deliver a Prospectus. This delivery
requirement is in addition to the dealers' obligation to deliver a Prospectus
when acting as underwriters and with respect to their unsold allotments or
subscriptions.
 
                                       ii
<PAGE>
                               PROSPECTUS SUMMARY
 
    YOU SHOULD READ THIS SUMMARY TOGETHER WITH THE MORE DETAILED INFORMATION AND
COMBINED FINANCIAL STATEMENTS AND RELATED NOTES THERETO APPEARING ELSEWHERE IN
THIS PROSPECTUS, INCLUDING THE INFORMATION UNDER "RISK FACTORS." UNLESS
OTHERWISE INDICATED, ALL INFORMATION IN THIS PROSPECTUS (I) REFLECTS THE
CONVERSION OF ALL OUTSTANDING SHARES OF OUR CONVERTIBLE PREFERRED STOCK INTO
31,126,184 SHARES OF COMMON STOCK UPON THE CONSUMMATION OF THIS OFFERING; (II)
REFLECTS THE CONSUMMATION OF THE MERGER BETWEEN PRICELINE.COM AND PRICELINE
TRAVEL, INC. PRIOR TO THE CONSUMMATION OF THIS OFFERING; AND (III) ASSUMES THAT
THE UNDERWRITERS' OVER-ALLOTMENT OPTION WILL NOT BE EXERCISED. SEE "DESCRIPTION
OF CAPITAL STOCK" AND "UNDERWRITERS."
 
                                  THE COMPANY
    Priceline.com has pioneered a unique new type of e-commerce known as a
"demand collection system" that enables consumers to use the Internet to save
money on a wide range of products and services while enabling sellers to
generate incremental revenue. Using a simple and compelling consumer
proposition--"name your price," we collect consumer demand (in the form of
individual customer offers guaranteed by a credit card) for a particular product
or service at a price set by the customer and communicate that demand directly
to participating sellers or to their private databases. Consumers agree to hold
their offers open for a specified period of time to enable priceline.com to
fulfill their offers from inventory provided by participating sellers. Once
fulfilled, offers generally cannot be canceled. By requiring consumers to be
flexible with respect to brands, sellers and/or product features, we enable
sellers to generate incremental revenue without disrupting their existing
distribution channels or retail pricing structures. We commenced the
priceline.com service on April 6, 1998 with the sale of leisure airline tickets
and, during the period from launch through September 30, 1998, collected
guaranteed offers for approximately 1.1 million airline tickets, representing
approximately $243.9 million in total consumer demand, resulting in sales of
approximately 67,275 airline tickets, representing approximately $15.5 million
in revenue. We expanded the priceline.com service to include the sale of new
automobiles, on a test basis, in July 1998 and hotel room reservations in
October 1998. During the first quarter of 1999, we expect to offer home
mortgages. We also intend to expand our product offerings over the next two
years to include other leisure travel products, other financial services
products and certain retail products.
 
    Our seller participants include 16 domestic and international airlines and
several nationally recognized hotel chains. We believe that the priceline.com
service already has achieved significant consumer acceptance and widespread
brand awareness. An independent research study conducted for us found that,
among adult Americans, the priceline.com "name your price" business proposition
was the second most recognized e-commerce brand among the 13 leading brands
included in the survey.
 
                                  THE OFFERING
 
<TABLE>
<S>                                                                         <C>
Common Stock offered
    U.S. offering.........................................................  shares
    International offering................................................  shares
        Total.............................................................  shares
Common Stock to be outstanding after the offering.........................  shares(1)
Use of proceeds...........................................................  For general corporate purposes, including capital
                                                                            expenditures and working capital. See "Use of Proceeds."
Proposed Nasdaq National Market symbol....................................  PRLN
</TABLE>
 
                     SUMMARY COMBINED FINANCIAL INFORMATION
 
<TABLE>
<CAPTION>
                                                                                                       NINE MONTHS    JULY 18, 1997
                                                                                                          ENDED        (INCEPTION)
                                                                                                      SEPTEMBER 30,  TO DECEMBER 31,
                                                                                                          1998            1997
                                                                                                      -------------  ---------------
<S>                                                                                                   <C>            <C>
COMBINED STATEMENT OF OPERATIONS DATA:
    Revenues........................................................................................   $16,243,733     $   --
    Cost of revenues................................................................................    16,793,797         --
                                                                                                      -------------  ---------------
      Gross profit (loss)...........................................................................      (550,064)        --
    Expenses:
      Sales and marketing...........................................................................    15,925,101         441,479
      General and adminstrative.....................................................................    14,198,661       1,011,600
      Systems and business development..............................................................     8,168,984       1,060,091
                                                                                                      -------------  ---------------
    Total expenses..................................................................................    38,292,746       2,513,170
                                                                                                      -------------  ---------------
    Operating loss..................................................................................   (38,842,810)     (2,513,170)
    Interest income (expense), net..................................................................       304,259            (312)
                                                                                                      -------------  ---------------
    Net income (loss)...............................................................................   $(38,538,551)   $(2,513,482)
                                                                                                      -------------  ---------------
                                                                                                      -------------  ---------------
    Net loss per common share.......................................................................   $     (0.62)    $     (0.06)
                                                                                                      -------------  ---------------
                                                                                                      -------------  ---------------
 
    Weighted average common shares outstanding......................................................    61,767,845      40,667,005
</TABLE>
 
<TABLE>
<CAPTION>
                                                                                                  AS OF SEPTEMBER 30, 1998
                                                                                           ---------------------------------------
                                                                                                          PRO         PRO FORMA
                                                                                             ACTUAL     FORMA(2)   AS ADJUSTED(2)
                                                                                           ----------  ----------  ---------------
<S>                                                                                        <C>         <C>         <C>
COMBINED BALANCE SHEET DATA:
    Cash and cash equivalents............................................................  $10,081,313 $65,431,313
    Working capital......................................................................   8,514,760  63,864,760
    Total assets.........................................................................  19,680,716  75,030,716
    Total liabilities....................................................................   6,527,682   6,527,682
    Total stockholders' equity...........................................................  13,153,034  68,503,034
</TABLE>
 
- ----------------------------------
(1) Excludes (i) 17,419,375 shares of Common Stock issuable upon the exercise of
    options outstanding as of December 23, 1998, with a weighted average
    exercise price of $1.07 per share; (ii) 9,180,625 additional shares of
    Common Stock available for future issuance under our stock option plans;
    (iii) 15,264,083 shares of Common Stock subject to outstanding warrants; and
    (iv) any shares that may be issued pursuant to the exercise of the
    Underwriters' over-allotment option. See "Capitalization, "Management --
    Employee Benefit Plans" and Notes 7 and 8 of Notes to Combined Financial
    Statements.
(2) For a description of the assumptions reflected in the Pro Forma and Pro
    Forma As Adjusted presentations, see "Capitalization."
 
                                       1
<PAGE>
                                  RISK FACTORS
 
    YOU SHOULD CAREFULLY CONSIDER THE FOLLOWING RISKS BEFORE MAKING AN
INVESTMENT DECISION. THE RISKS DESCRIBED BELOW ARE NOT THE ONLY ONES THAT WE
FACE. ADDITIONAL RISKS THAT ARE NOT YET KNOWN TO US OR THAT WE CURRENTLY THINK
ARE IMMATERIAL COULD ALSO IMPAIR OUR BUSINESS, OPERATING RESULTS OR FINANCIAL
CONDITION. THE TRADING PRICE OF OUR COMMON STOCK COULD DECLINE DUE TO ANY OF
THESE RISKS, AND YOU COULD LOSE ALL OR PART OF YOUR INVESTMENT. YOU ALSO SHOULD
REFER TO THE OTHER INFORMATION SET FORTH IN THIS PROSPECTUS, INCLUDING OUR
COMBINED FINANCIAL STATEMENTS AND THE RELATED NOTES THERETO.
 
    THIS PROSPECTUS CONTAINS FORWARD-LOOKING STATEMENTS. THESE STATEMENTS RELATE
TO FUTURE EVENTS OR FUTURE FINANCIAL PERFORMANCE. IN SOME CASES, YOU CAN
IDENTIFY FORWARD-LOOKING STATEMENTS BY TERMINOLOGY SUCH AS "MAY," "WILL,"
"SHOULD," "COULD," "EXPECTS," "PLANS," "ANTICIPATES," "BELIEVES," "ESTIMATES,"
"PREDICTS," "POTENTIAL," OR "CONTINUE" OR THE NEGATIVE OF SUCH TERMS AND OTHER
COMPARABLE TERMINOLOGY. THESE STATEMENTS ARE ONLY PREDICTIONS. IN EVALUATING
THESE STATEMENTS, YOU SHOULD SPECIFICALLY CONSIDER VARIOUS FACTORS, INCLUDING
THE RISKS OUTLINED BELOW. THESE FACTORS MAY CAUSE OUR ACTUAL RESULTS TO DIFFER
MATERIALLY FROM ANY FORWARD LOOKING STATEMENT. SEE "SPECIAL NOTE REGARDING
FORWARD-LOOKING STATEMENTS."
 
LIMITED OPERATING HISTORY
 
    Priceline.com was formed in July 1997 and began operations on April 6, 1998.
As a result, we have only a limited operating history on which you can base an
evaluation of our business and prospects. Our prospects must be considered in
the light of the risks, uncertainties, expenses and difficulties frequently
encountered by companies in their early stages of development, particularly
companies in new and rapidly evolving markets, such as online commerce, using
new and unproven business models. To address these risks and uncertainties, we
must, among other things:
 
    - attract and retain leading sellers as participants in the priceline.com
      service;
 
    - attract consumers to use the priceline.com service;
 
    - maintain and enhance our brand;
 
    - continue to expand our product and service offerings;
 
    - implement and execute our business and marketing strategy successfully;
 
    - respond to competitive developments;
 
    - attract, integrate, retain and motivate qualified personnel;
 
    - continue to develop and upgrade our technology and information-processing
      systems;
 
    - continue to enhance our service to meet the needs of a changing market;
      and
 
    - provide superior customer service.
 
We may not be successful in accomplishing these objectives.
 
HISTORY OF LOSSES AND ANTICIPATED CONTINUING LOSSES
 
    We have incurred net losses of $41.1 million during the period from July 18,
1997 (inception) through September 30, 1998. We have not achieved profitability
and expect to continue to incur losses for the foreseeable future. The following
costs have been, and are likely to continue to be, the principal causes of our
losses:
 
    - brand development, marketing and promotion costs;
 
    - start-up costs, such as the costs of establishing our facilities, building
      our infrastructure and employing personnel; and
 
    - costs of developing the technology and systems used for the priceline.com
      service.
 
                                       2
<PAGE>
    Almost all of our revenues to date have been derived from airline ticket
sales and related adaptive marketing programs. In order to increase revenues,
build a record of successful transactions and enhance the priceline.com brand,
we have sold a substantial portion of our airline tickets below cost. In
addition, as our business model evolves, we expect to introduce a number of new
products and services. With respect to both current and future product and
service offerings, we plan to continue to significantly increase our operating
expenses in order to increase our customer base, enhance our brand image and
support our growing infrastructure. For us to make a profit, our revenues and
gross profit margins will need to increase sufficiently to cover these and other
future costs. To do so, we will need to:
 
    - increase the volume and breadth of products and services offered through
      the priceline.com service by attracting new seller participants and
      expanding the products and services offered by existing seller
      participants;
 
    - improve our gross margins;
 
    - maintain and increase the revenues generated by adaptive marketing
      programs;
 
    - attract more consumers to the priceline.com service; and
 
    - increase the percentage of customer offers that are filled through the
      priceline.com service.
 
If we do not succeed in achieving these objectives, we may never make a profit.
 
DEPENDENCE ON ADAPTIVE MARKETING PROGRAMS
 
    Our adaptive marketing programs permit consumers to increase the amount of
their offers at no additional cost by participating in sponsor promotions during
the process of making an offer through the priceline.com service. Currently,
almost all of our adaptive marketing revenues are derived from fees paid by a
third party credit card issuer for qualifying credit card applications submitted
over the priceline.com service in connection with customer offers for airline
tickets. We expect that revenues attributable to our adaptive marketing programs
will increase significantly in future periods. Because the fees generated by our
adaptive marketing program have high gross margins, adaptive marketing revenues
have a disproportionate impact on our overall gross margin. We expect our
overall gross margin to be positive in future periods and a substantial portion
of our gross profit will be attributable to our adaptive marketing programs. A
significant reduction in consumer acceptance of our adaptive marketing programs
or any other material decline in such programs could result in a material
reduction in our revenues and our gross profit. We may not be able to replace
such revenues through other programs or through product sales.
 
POTENTIAL FLUCTUATIONS IN RESULTS OF OPERATIONS; DIFFICULTY IN PREDICTING
  RESULTS OF OPERATIONS
 
    We expect our revenues and operating results to vary significantly from
quarter to quarter. As a result, quarter to quarter comparisons of our revenues
and operating results may not be meaningful. In addition, due to our limited
operating history and our new and unproven business model, we cannot predict our
future revenues or results of operations accurately. It is likely that in one or
more future quarters our operating results will fall below the expectations of
securities analysts and investors. If this happens, the trading price of our
Common Stock would almost certainly be materially and adversely affected.
 
    Factors that may cause our results of operations to vary from quarter to
quarter include:
 
    - consumers' and sellers' use of the priceline.com service;
 
    - our ability to attract new sellers of products and services to participate
      in the priceline.com service;
 
    - our ability to expand the products and services offered;
 
    - the fulfillment rate of customers' offers;
 
    - the results of our adaptive marketing programs;
 
    - the announcement or introduction of new sites, services and products by
      our competitors;
 
                                       3
<PAGE>
    - the success of our brand building and marketing campaigns;
 
    - price competition in the sale of products and services offered over the
      priceline.com system;
 
    - the level of consumer confidence in and acceptance of the Internet and
      other online services for commerce and, in particular, the online purchase
      of products and services such as those offered by the priceline.com
      service;
 
    - our ability to upgrade and develop our systems and infrastructure to
      accommodate growth;
 
    - our ability to attract new personnel in a timely and effective manner;
 
    - the occurrence of technical difficulties or service interruptions;
 
    - the amount and timing of operating costs and capital expenditures relating
      to expansion of our business, operations and infrastructure;
 
    - changes in governmental regulation by federal or local governments; and
 
    - general economic conditions and economic conditions specific to the
      Internet and online commerce industries, as well as the individual
      industries, for the products and services sold through the priceline.com
      system.
 
    Our business has no backlog and almost all of our net revenues for a
particular quarter are derived from transactions that are both initiated and
completed during that quarter. Our current and future expense levels are based
largely on our investment plans and estimates of future revenues and are, to a
large extent, fixed. Accordingly, we may be unable to adjust spending in a
timely manner to compensate for any unexpected revenue shortfall, and any
significant shortfall in revenues relative to our planned expenditures could
have an immediate adverse effect on our business and results of operations.
 
    Our limited operating history and rapid growth makes it difficult for us to
assess the impact of seasonal factors on our business. Nevertheless, we expect
our business to be subject to seasonal fluctuations, reflecting a combination of
seasonality trends for the products and services offered by the priceline.com
service and seasonality patterns affecting Internet use. For example, with
regard to our travel products, demand for leisure travel may increase over
summer vacations and holiday periods, while Internet usage may decline during
the summer months. Our results also may be affected by seasonal fluctuations in
the inventory made available to the priceline.com service by participating
sellers. Airlines, for example, typically enjoy high demand for tickets through
traditional distribution channels for travel during Thanksgiving and the
year-end holiday period. As a result, during those periods, airlines may have
less excess inventory to offer through the priceline.com service at discounted
prices. Our business also may be subject to cyclical variations for the products
and services offered; for example, leisure travel tends to decrease in economic
downturns. See "Management's Discussion and Analysis of Financial Condition and
Results of Operations."
 
DEPENDENCE ON AIRLINE INDUSTRY AND CERTAIN CARRIERS
 
    Our near term, and possibly long term, prospects are significantly dependent
upon our sale of leisure airline tickets. Sales of leisure airline tickets and
revenues derived from related adaptive marketing programs represented
essentially all of our revenues for the nine months ended September 30, 1998.
Leisure travel, including the sale of leisure airline tickets, is dependent on
personal discretionary spending levels. As a result, sales of leisure airline
tickets and other leisure travel products tend to decline during general
economic downturns and recessions. Unforeseen events, such as political
instability, regional hostilities, increases in fuel prices, travel-related
accidents and unusual weather patterns also may adversely affect the leisure
travel industry. As a result, our business also is likely to be affected by
those events. See "Management's Discussion and Analysis of Financial Condition
and Results of Operations."
 
    Sales of airline tickets from the Company's two largest airline suppliers
accounted for approximately 88% of airline ticket revenue for the nine months
ended September 30, 1998. As a result, currently we are
 
                                       4
<PAGE>
substantially dependent upon the continued participation of these two airlines
in the priceline.com service in order to maintain and continue to grow our total
airline ticket revenues. Significantly reducing our dependence on the airline
and travel industries is likely to take a long time and there can be no
guarantee that we will succeed in reducing that dependence.
 
    We currently have agreements with 16 airlines for the supply of airline
tickets. However, these agreements:
 
    - do not require the airlines to make tickets available for any particular
      routes;
 
    - do not require the airlines to provide any specific quantity of airline
      tickets;
 
    - do not require the airlines to provide particular prices or levels of
      discount;
 
    - do not require the airlines to deal exclusively with us in the public sale
      of discounted airline tickets; and
 
    - generally, can be terminated upon relatively short notice.
 
    These agreements also outline the terms and conditions under which ticket
inventory provided by the airlines may be sold. In addition, our agreement with
Delta Air Lines requires (subject to certain exceptions) Delta's approval of the
addition of new carriers to the priceline.com service and the routes for which
tickets may be offered by new carriers through the priceline.com service. See
"Business -- Strategic Alliances -- Airline Alliances and Relationships."
 
    Due to our dependence on the airline industry, we could be severely affected
by changes in that industry, and, in many cases, we will have no control over
such changes or their timing. For example, if the Federal Aviation
Administration grounded a popular aircraft model, excess seat capacity could be
dramatically reduced, and as a result, our source of inventory could be
significantly curtailed. In addition, given the concentration of the airline
industry, particularly in the domestic market, major airlines that are not
participating in the priceline.com service could exert pressure on other
airlines not to supply us with tickets. Alternatively, the airlines could
attempt to establish their own buyer-driven commerce service or other similar
service to compete with us. We also could be materially adversely affected by
the bankruptcy, insolvency or other material adverse change in the business or
financial condition of one or more of our airline participants.
 
THE PRICELINE.COM BUSINESS MODEL IS NOVEL AND UNPROVEN
 
    The priceline.com service is based on a novel and unproven business model.
Prior to the launch of the priceline.com service, consumers and sellers had
never bought and sold products and services through a demand collection system
over the Internet. Therefore, it is impossible to predict the degree to which
consumers and suppliers will use the priceline.com service. We will be
successful only if consumers and sellers gain confidence in the priceline.com
service.
 
    Factors influencing consumers' confidence in the priceline.com service
include:
 
    - our ability to consistently fulfill offers (currently, less than 10% of
      all consumers' offers are fulfilled); and
 
    - consumers' willingness (i) to be flexible about brands, product features
      and sellers in exchange for reduced prices; (ii) to guarantee offers with
      credit cards; and (iii) to conduct online commerce in general.
 
    Factors influencing sellers' confidence in the priceline.com service
include:
 
    - the belief that the priceline.com service will enable them to generate
      incremental revenue without disrupting their existing distribution
      channels or retail pricing structures; and
 
    - the availability of alternative methods to sell their excess inventory.
 
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We have no control over many of these factors. For example, a labor dispute that
disrupts airline service, or an airline accident, could make consumers unwilling
to use a service like priceline.com that does not permit the customer to
designate the airline on which the customer purchases a ticket. In addition, a
breach of security on the Internet (even if we were not involved) could make
consumers unwilling to guarantee orders online with a credit card. Consequently,
it is possible that consumers and sellers will never gain sufficient confidence
in the priceline.com service for us to achieve profitability.
 
RISKS ASSOCIATED WITH NEW SERVICES, FEATURES AND FUNCTIONS
 
    An essential part of our growth strategy requires that new or complementary
products and services and a broader range of existing products and services be
available through the priceline.com service. We will incur substantial expenses
and use significant resources in trying to expand the type and range of the
products and services that we offer. However, we may not be able to attract
sellers to provide such products and services or consumers to purchase such
products and services through the priceline.com service. In addition, if we
launch new products or services and they are not favorably received by
consumers, our reputation and the value of the priceline.com brand could be
damaged.
 
    Almost all of our experience to date is in the travel industry. The travel
industry is characterized by "expiring" inventories (I.E., if not used by a
specific date, an airline ticket or hotel room reservation has no value). The
expiring nature of the inventory creates incentives for airlines and hotels to
sell seats or room reservations at reduced rates. Because we have only limited
experience in selling "non-expiring" inventories on the priceline.com service
(such as new cars or financial services), we cannot predict whether the
priceline.com business model can be successfully applied to such products and
services.
 
RISKS ASSOCIATED WITH BRAND DEVELOPMENT
 
    We believe that broader recognition and a favorable consumer perception of
the priceline.com brand are essential to our future success. Accordingly, we
intend to continue to pursue an aggressive brand-enhancement strategy, which
will include mass market and multimedia advertising, promotional programs and
public relations activities. Successful positioning of the priceline.com brand
will largely depend on:
 
    - the success of our advertising and promotional efforts;
 
    - an increase in the number of successful transactions on the priceline.com
      service; and
 
    - the ability to continue to provide high quality customer service.
 
    We believe that consumers currently associate the priceline.com brand
primarily with the sale of discount airline tickets. To grow our business, we
will need to expand awareness of the priceline.com brand to a wide range of
products and services.
 
    We spent approximately $15.9 million on sales and marketing during the nine
months ended September 30, 1998. To increase awareness of the priceline.com
brand and expand it to a wide range of products and services, we will need to
continue to spend significant amounts on advertising and promotions. These
expenditures may not result in a sufficient increase in revenues to cover such
advertising and promotions expenses. In addition, even if brand recognition
increases, the number of new users or the number of transactions on the
priceline.com service may not increase. Also, even if the number of new users
increases, those users may not use the priceline.com service on a regular basis.
See "Business -- Marketing and Brand Awareness."
 
CONFLICTS OF INTEREST
 
    The priceline.com service and the business model and related intellectual
property rights underlying the priceline.com service were developed in part by
executives, employees and/or consultants associated with Walker Digital
Corporation, a technology research and development company that was founded and
is controlled by Mr. Jay S. Walker, who is the Founder and Vice Chairman of
priceline.com. Such individuals assigned all of their intellectual property
rights relating to the priceline.com service to Walker
 
                                       6
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Digital's affiliate, Walker Asset Management Limited Partnership. Certain of our
executive officers and other key employees also are directors, officers,
employees or stockholders of Walker Digital and either own, or hold an option to
purchase, equity securities of Walker Digital. Upon the consummation of this
offering, Walker Digital also will own approximately     % of our outstanding
Common Stock. Conflicts of interest could potentially arise between us and
Walker Digital.
 
    POTENTIAL BUSINESS CONFLICTS
 
    Walker Digital's affiliate, Walker Asset Management, subsequently
transferred the issued and pending patents covering the priceline.com service
and other related intellectual property rights to us. We, in turn, granted
Walker Digital a perpetual, non-exclusive, royalty-free right and license to use
certain intellectual property related to the priceline.com service for
non-commercial internal research and development purposes. Walker Digital also
provides us with, among other things, a right to purchase at fair market value
any intellectual property that is in process or has been fully developed and
that is owned and subsequently acquired, developed or discovered by Walker
Digital or Walker Asset Management that will provide significant value in the
use or commercial exploitation of the transferred intellectual property. Walker
Digital also provides us with various services, including (i) research and
development assistance; (ii) patent and other intellectual property services;
and (iii) technical support. Walker Digital also subleases a portion of its
Stamford, Connecticut facilities to us on a month-to-month basis.
 
    Accordingly, conflicts of interest may arise from time to time between us
and Walker Digital, particularly with respect to the purchase by us of
additional intellectual property rights and certain corporate opportunities. We
have not adopted any formal plan or arrangement to address such potential
conflicts of interest and intend to review related party transactions with
Walker Digital on a case-by-case basis. See "Certain Transactions," "Business --
Employees" and "Management."
 
    MANAGEMENT CONFLICTS
 
    Because we have interlocking directors and officers with Walker Digital,
there may be inherent conflicts of interest when such directors and officers
make decisions related to transactions between us and Walker Digital. We could
lose valuable management input from such conflicted directors and officers.
 
    Mr. Jay S. Walker, as the founder of Walker Digital and as our founder, has
performed an essential role in the establishment and development of the
priceline.com service. Mr. Walker also serves as Chairman of Walker Digital and
as non-executive Chairman of NewSub Services, Inc., a direct marketing company
also co-founded by him. Mr. Walker devotes (and expects to continue to devote) a
substantial portion of his time to Walker Digital and a lesser portion of his
time to NewSub Services. Mr. Walker has not committed to devote any specific
percentage of his business time to us.
 
    In July 1998, Mr. Richard S. Braddock replaced Mr. Walker as our Chairman
and Chief Executive Officer. As a result, Mr. Walker's role with us has been
reduced and we expect that Mr. Walker will continue to reduce his involvement
with us over time. Mr. Walker's skills and experience have benefitted, and
continue to benefit, us significantly. We could lose valuable management
expertise as Mr. Walker further reduces his day-to-day involvement with us. See
"Management."
 
MANAGEMENT OF POTENTIAL GROWTH
 
    We have rapidly and significantly expanded our operations and anticipate
that further expansion will be required to realize our growth strategy. Our
rapid growth has placed significant demands on our management and other
resources which, given our expected future growth rate, is likely to continue.
To manage our future growth, we will need to attract, hire and retain highly
skilled and motivated officers and employees and improve existing systems and/or
implement new systems for: (i) transaction processing; (ii) operational and
financial management; and (iii) training, integrating and managing our growing
employee base. See "Management's Discussion and Analysis of Financial Condition
and Results of Operations."
 
                                       7
<PAGE>
DEPENDENCE ON KEY PERSONNEL; NEED TO RECRUIT ADDITIONAL PERSONNEL
 
    Since our formation in July 1997, we have expanded from 10 to 124 employees.
We also have employed many key personnel over the past few months, including our
Chief Executive Officer, and a number of key managerial, marketing, planning,
financial, technical and operations personnel. We expect to continue to add
additional key personnel in the near future. We do not have "key person" life
insurance policies on any of our key personnel.
 
    We believe our performance is substantially dependent on:
 
    - the continued employment and performance of our senior management;
 
    - our ability to retain and motivate our other officers and key employees;
      and
 
    - our ability to identify, attract, hire, train, retain and motivate other
      highly skilled technical, managerial, marketing and customer service
      personnel.
 
    Competition for personnel in our industry is intense. If we do not succeed
in attracting new employees or retaining and motivating our current and future
employees, our business could suffer significantly. See "Business -- Employees"
and "Management."
 
RISK OF CAPACITY CONSTRAINTS AND SYSTEM FAILURES
 
    We use internally developed systems to operate the priceline.com service,
including transaction processing and order management systems that were designed
to be scalable. However, if the number of users of the priceline.com service
increases substantially, we will need to significantly expand and upgrade our
technology, transaction processing systems and network infrastructure. We do not
know whether we will be able to accurately project the rate or timing of any
such increases, or expand and upgrade our systems and infrastructure to
accommodate such increases in a timely manner.
 
    Our ability to facilitate transactions successfully and provide high quality
customer service also depends on the efficient and uninterrupted operation of
our computer and communications hardware systems. The priceline.com service has
experienced periodic system interruptions, which we believe will continue to
occur from time to time. Our systems and operations also are vulnerable to
damage or interruption from human error, natural disasters, power loss,
telecommunication failures, break-ins, sabotage, computer viruses, intentional
acts of vandalism and similar events. While we currently maintain redundant
servers at our Stamford, Connecticut premises to provide limited service during
system disruptions at our production site hosted by Exodus Communications, Inc.,
we do not have fully redundant systems, a formal disaster recovery plan or
alternative providers of hosting services. In addition, we do not carry
sufficient business interruption insurance to compensate for losses that could
occur. Any system failure that causes an interruption in service or decreases
the responsiveness of the priceline.com service could impair our reputation and
damage our brand name.
 
    If our systems fail to perform or we cannot expand our systems to cope with
increased demand, we could experience:
 
    - unanticipated disruptions in service;
 
    - slower response times;
 
    - decreased customer service and customer satisfaction; or
 
    - delays in the introduction of new products and services;
 
any of which could impair our reputation and damage the priceline.com brand. See
"Business -- Operations and Technology."
 
                                       8
<PAGE>
RELIANCE ON THIRD-PARTY SYSTEMS
 
    We rely on certain third-party computer systems or third-party service
providers, including:
 
    - the computerized central reservation systems of the airline and hotel
      industries to satisfy demand for airline tickets and hotel room
      reservations;
 
    - Exodus Communications to host our systems infrastructure, web and database
      servers; and
 
    - CallTech Communications Incorporated to operate our call center.
 
    We also expect to rely on the computer systems of LendingTree, Inc., to
satisfy offers for home mortgages. Any interruption in these third-party
services, or a deterioration in their performance, could be disruptive to our
business. We currently do not have any contractual arrangement with Exodus
Communications, and our agreements with CallTech Communications and LendingTree
are terminable upon short notice. In the event our arrangement with any of such
third parties is terminated, we may not be able to find an alternative source of
systems support on a timely basis or on commercially reasonable terms. See
"Business -- Products and Services."
 
INTENSE COMPETITION
 
    The markets for the products and services offered on the priceline.com
service are intensely competitive. We compete with both traditional distribution
channels and online services.
 
    We currently or potentially compete with a variety of companies with respect
to each product or service we offer. With respect to travel products, these
competitors include: (i) Internet travel agents such as Travelocity, Preview
Travel and Microsoft's Expedia.com; (ii) traditional travel agencies; (iii)
consolidators and wholesalers of airline tickets and other travel products; (iv)
individual airlines, hotels, rental car companies, cruise operators and other
travel service providers; and (v) operators of travel industry reservation
databases such as Worldspan and Sabre. Our current or potential competitors with
respect to new automobiles include traditional and online auto dealers,
including newly developing auto superstores such as Auto Nation, Auto-by-Tel and
Microsoft's CarPoint. With respect to financial service products, our
competitors include: (i) banks and other financial institutions; and (ii) online
and traditional mortgage and insurance brokers, including Quicken Mortgage,
E-Loan and Home Shark.
 
    We also potentially face competition from a number of large online services
that have expertise in developing online commerce and in facilitating Internet
traffic. These potential competitors include America Online, Microsoft and
Yahoo!, who could choose to compete with us either directly or indirectly
through affiliations with other e-commerce companies. Other large companies with
strong brand recognition, technical expertise and experience in online commerce
and direct marketing could also seek to compete in the buyer-driven commerce
market. See "Business -- Competition."
 
    Many of our competitors have significant competitive advantages. For
example, airlines, hotels and other suppliers also sell their products and
services directly to consumers and have established Web sites. Internet
directories, search engines and large traditional retailers have significantly
greater operating histories, customer bases, technical expertise, brand
recognition and/or online commerce experience than us. In addition, certain
competitors may be able to devote significantly greater resources than us to (i)
marketing and promotional campaigns; (ii) attracting traffic to their Web sites;
(iii) attracting and retaining key employees; and (iv) Web site and systems
development. Increased competition could diminish our ability to become
profitable or result in loss of market share and damage the priceline.com brand.
 
PROTECTION AND ENFORCEMENT OF OUR INTELLECTUAL PROPERTY RIGHTS
 
    We have developed a comprehensive program for securing and protecting rights
in patentable inventions, trademarks, trade secrets and copyrightable materials.
We rely on United States and
 
                                       9
<PAGE>
international laws (where available and appropriate) to protect our patents,
trademarks, trade secrets and copyrightable materials. In addition, we utilize
nondisclosure and assignment agreements with employees, vendors, suppliers,
contractors and outside developers to secure these same intellectual property
rights.
 
    PATENTS
 
    We currently hold one issued United States patent covering our core
buyer-driven commerce business system and one issued United States patent
directed to a method and system for pricing and selling airline ticket options.
In addition, we have pending seventeen United States and international patent
applications directed to different aspects of our technology and business
processes. We also have instituted an invention development program to identify
and protect new inventions and a program for international filing of selected
patent applications. It is possible, however, that:
 
    - our core buyer-driven commerce business patent and the other issued patent
      could be successfully challenged by one or more third parties, which could
      result in our loss of the right to prevent others from exploiting the
      buyer-driven commerce system claimed in the patent or the inventions
      claimed in any other issued patents;
 
    - our pending patent applications may not result in the issuance of patents;
      and
 
    - current and future competitors could devise new methods of competing with
      our business that are not covered by our issued patent or patent
      applications.
 
    We have received verbal notice of a third party's intent to file with the
United States Patent and Trademark Office a request to declare an "interference"
with our core buyer-driven commerce business patent. An interference is
requested when a patent applicant asserts that he or she is a prior inventor of
the subject matter covered by one or more claims in a third party issued patent
or pending application. A successful interference action could prohibit the
original patent holder from exploiting the invention entirely.
 
    We received notice of the potential interference from the holder of two
related United States patent applications, one of which has since been issued as
a patent. We are currently awaiting information from the Patent and Trademark
Office regarding the status of the interference request. We have reviewed, with
outside intellectual property counsel, a published international patent
application based on the two United States patent applications and believe that
there is no reasonable basis for the United States Patent and Trademark Office
to declare an interference action, and, if an interference is declared, that
there is no reasonable basis to resolve such interference adversely. However, if
an interference action is declared, the patent office could then seek to
determine whether one or more of our patent claims were invalid. If an
interference is subsequently resolved in a manner adverse to us, such
declaration or resolution could prevent us from exploiting our business model
through the priceline.com service or require us to obtain licenses from one or
more other patent holders at a cost which may adversely affect our business. In
addition, the Company has recently learned of an Internet travel service that
uses a customer-offer based transaction model.
 
    TRADEMARKS, COPYRIGHTS AND TRADE SECRETS
 
    We regard the protection of our copyrights, service marks, trademarks, trade
dress and trade secrets as critical to our future success. We rely on a
combination of laws and contractual restrictions (such as confidentiality
agreements) to establish and protect our proprietary rights. However, laws and
contractual restrictions may not be sufficient to prevent misappropriation of
our technology or deter others from developing similar technologies. We also
attempt to register our trademarks and service marks in the United States and
internationally. However, effective trademark, service mark, copyright and trade
secret protection may not be available in every country in which our services
are made available online.
 
                                       10
<PAGE>
    DOMAIN NAMES
 
    We currently hold the Internet domain name "priceline.com," as well as
various other related names. Domain names generally are regulated by Internet
regulatory bodies. The regulation of domain names in the United States and in
foreign countries is subject to change. Regulatory bodies could establish
additional top-level domains, appoint additional domain name registrars or
modify the requirements for holding domain names. As a result, we may not
acquire or maintain the "priceline.com" domain name in all of the countries in
which we conduct business.
 
    The relationship between regulations governing domain names and laws
protecting trademarks and similar proprietary rights is unclear. Therefore, we
could be unable to prevent third parties from acquiring domain names that
infringe or otherwise decrease the value of our trademarks and other proprietary
rights. See "Business -- Intellectual Property and Proprietary Rights."
 
    LICENSES
 
    In the future, we may license portions of our intellectual property,
including our issued patents, to third parties. To date, we have granted a small
business providing online travel services immunity from suit under our core
buyer-driven commerce business patent, on the condition that the nature and
scope of such business is not significantly changed. If the nature or scope of
such immunity were disputed, we would need to institute proceedings to enforce
our rights either under the immunity agreement or under the patent.
 
DEPENDENCE ON CONTINUED GROWTH OF ONLINE COMMERCE AND INTERNET INFRASTRUCTURE
 
    The market for the purchase of products and services over the Internet is a
new and emerging market. Our future revenues and profits are substantially
dependent upon the widespread acceptance and use of the Internet and other
online services as a medium for commerce by consumers and sellers. Rapid growth
in the use of and interest in the Internet and other online services is a recent
phenomenon. This growth may not continue. A sufficiently broad base of consumers
may not adopt, or continue to use, the Internet as a medium of commerce. Demand
for and market acceptance of recently introduced products and services over the
Internet are subject to a high level of uncertainty, and there are few proven
products and services. For us to grow, consumers who have historically used
traditional means of commerce will instead need to elect to purchase products
and services online, and sellers of products and services will need to adopt or
expand use of the Internet as a channel of distribution.
 
    The Internet has experienced, and is expected to continue to experience,
significant growth in the number of users and amount of traffic. Our success
will depend upon the development and maintenance of the Internet's
infrastructure to cope with this increased traffic. This will require a reliable
network backbone with the necessary speed, data capacity and security, and the
timely development of complementary products, such as high-speed modems, for
providing reliable Internet access and services.
 
    The Internet has experienced a variety of outages and other delays as a
result of damage to portions of its infrastructure and could face such outages
and delays in the future. See "-- Year 2000 Risks." Outages and delays are
likely to affect the level of Internet usage and the processing of transactions
on the priceline.com Web site. It is unlikely that the level of orders lost in
those circumstances could be made up by increased phone orders. In addition, the
Internet could lose its viability due to delays in the development or adoption
of new standards to handle increased levels of activity or due to increased
government regulation. The adoption of new standards or government regulation
may, however, require us to incur substantial compliance costs.
 
RAPID TECHNOLOGICAL CHANGE
 
    The market in which we compete is characterized by rapidly changing
technology, evolving industry standards, frequent new service and product
announcements, introductions and enhancements and
 
                                       11
<PAGE>
changing consumer demands. These market characteristics are heightened by the
emerging nature of the Internet and the apparent need of companies from many
industries to offer Internet-based products and services. As a result, our
future success will depend on our ability to adapt to rapidly changing
technologies, to adapt our services to evolving industry standards and to
continually improve the performance, features and reliability of our service in
response to competitive service and product offerings and the evolving demands
of the marketplace. In addition, the widespread adoption of new Internet,
networking or telecommunications technologies or other technological changes
could require us to incur substantial expenditures to modify or adapt our
services or infrastructure.
 
YEAR 2000 RISKS
 
    The risks posed by Year 2000 issues could adversely affect our business in a
number of significant ways. Although we believe that our internally developed
systems and technology are Year 2000 compliant, our information technology
system nevertheless could be substantially impaired or cease to operate due to
Year 2000 problems. Additionally, we rely on information technology supplied by
third parties, and our participating sellers are also heavily dependent on
information technology systems and on their own third party vendors' systems.
Year 2000 problems experienced by us or any of such third parties could
materially adversely affect our business. Additionally, the Internet could face
serious disruptions arising from the Year 2000 problem.
 
    We are evaluating our internal information technology systems and contacting
our information technology suppliers and participating sellers to ascertain
their Year 2000 status. However, we cannot guarantee that our own systems will
be Year 2000 compliant in a timely manner, that any of our participating sellers
or other Web site vendors will be Year 2000 compliant in a timely manner, or
that there will not be significant interoperability problems among information
technology systems. We also cannot guarantee that consumers will be able to
visit our Web site without serious disruptions arising from the Year 2000
problem. Given the pervasive nature of the Year 2000 problem, we cannot
guarantee that disruptions in other industries and market segments will not
adversely affect our business. Moreover, the costs related to Year 2000
compliance could be significant.
 
ONLINE COMMERCE SECURITY RISKS
 
    The secure transmission of confidential information over the Internet is
essential in maintaining consumer and supplier confidence in the priceline.com
service. We currently require buyers to guarantee their offers with their credit
card (either online or through our toll-free telephone service). We rely on
licensed encryption and authentication technology to effect secure transmission
of confidential information, including credit card numbers. It is possible that
advances in computer capabilities, new discoveries or other developments could
result in a compromise or breach of the technology used by us to protect
customer transaction data.
 
    We incur substantial expense to protect against and remedy security breaches
(and their consequences). A party that is able to circumvent our security
systems could steal proprietary information or cause interruptions in our
operations. Security breaches also could damage our reputation and expose us to
a risk of loss or litigation and possible liability. Our insurance policies
carry low coverage limits, which may not be adequate to reimburse us for losses
caused by security breaches. We cannot guarantee that our security measures will
prevent security breaches. See "Business -- Operations and Technology."
 
    We also face risks associated with security breaches affecting third parties
conducting business over the Internet. Consumers generally are concerned with
security and privacy on the Internet and any publicized security problems could
inhibit the growth of the Internet (and, therefore, the priceline.com service)
as a means of conducting commercial transactions.
 
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<PAGE>
NO PRIOR MARKET FOR COMMON STOCK; POSSIBLE VOLATILITY OF STOCK PRICE
 
    Prior to this offering, you could not buy or sell our Common Stock publicly.
An active public market for our Common Stock may not develop or be sustained
after this offering. Although the initial public offering price was determined
based on several factors, the market price after the offering may vary from the
initial offering price. The market price of our Common Stock is likely to be
highly volatile and could be subject to wide fluctuations in response to factors
such as the following, some of which are beyond our control:
 
    - quarterly variations in our operating results;
 
    - operating results that vary from the expectations of securities analysis
      and investors;
 
    - changes in expectations as to our future financial performance, including
      financial estimates by securities analysts and investors;
 
    - changes in market valuations of other Internet or online service
      companies;
 
    - announcements of technological innovations or new services by us or our
      competitors;
 
    - announcements by us or our competitors of significant contracts,
      acquisitions, strategic partnerships, joint ventures or capital
      commitments;
 
    - loss of a major seller participant (such as an airline or hotel chain);
 
    - additions or departures of key personnel;
 
    - future sales of our Common Stock; and
 
    - stock market price and volume fluctuations.
 
    Domestic and international stock markets often experience extreme price and
volume fluctuations. Market fluctuations, as well as general political and
economic conditions, such as a recession or interest rate or currency rate
fluctuations, could adversely affect the market price of our Common Stock.
 
    The market prices for stocks of Internet-related and technology companies,
particularly following an initial public offering, frequently reach levels that
bear no relationship to the operating performance of such companies. Such market
prices generally are not sustainable and are subject to wide variations. If our
Common Stock trades to such levels following this offering, it likely will
thereafter experience a material decline.
 
    In the past, securities class action litigation has often been brought
against a company following periods of volatility in the market price of our
securities. We may in the future be the target of similar litigation. Securities
litigation could result in substantial costs and divert management's attention
and resources.
 
GOVERNMENTAL REGULATION AND LEGAL UNCERTAINTIES
 
    The products and services we offer through the priceline.com service are
regulated by federal and state governments. Our ability to provide such services
is and will continue to be affected by such regulations.
 
    TRAVEL SERVICES
 
    We are subject to the laws and regulations of a number of states governing
the offer and/or sale of travel services. For example, Priceline Travel, Inc. is
registered as a "seller of travel" under the California Seller of Travel Act and
is a member of the Airline Reporting Corporation. Priceline.com also will be
making similar filings for registration and membership prior to consummation of
this offering. In addition, a number of state travel laws and regulations
require compliance with specific disclosure, bond and/or
 
                                       13
<PAGE>
other requirements. All travel registrations are presently held by Priceline
Travel. To the extent that such registrations can be transferred by merger, we
intend to succeed to all such registrations by merging with Priceline Travel
prior to the consummation of this offering. We expect to obtain all other
required travel related registrations prior to the consummation of this
offering.
 
    NEW CAR SALES
 
    A number of states have laws and regulations governing the registration and
conduct of automobile dealers and brokers. Such laws generally provide that any
person receiving direct or indirect compensation for selling automobiles or
brokering automobile transactions must register as an automobile broker or
dealer. Registration for automobile dealers/brokers may, among other things,
require the registrant to maintain a physical office in the applicable state, a
dealer lot zoned for automobile sales within the applicable state, and/or a
franchise agreement with the manufacturers of the automobiles to be sold. We
believe that we are not subject to such automobile dealer/broker laws because we
are a car buying service, and not a seller or broker of automobiles, operating
on behalf of customers and participating dealers.
 
    It is uncertain how automobile dealer and broker laws apply to the provision
of automobile selling services offered through the Internet. We have been orally
advised by representatives of a number of states that no enforcement action will
be initiated against Internet companies generally for non-compliance with such
laws until clearer regulatory or legislative guidance is provided.
 
    It is possible, however, that state regulatory bodies could take the view
that we are subject to automobile broker and dealer laws, in which case they
could attempt to require us to register as an automobile broker/ dealer in the
applicable states. Given the nature of our business, any requirement to register
under such laws could severely interfere with the conduct of our business.
 
    HOME MORTGAGES
 
    Most states have laws and regulations governing the registration or
licensing and conduct of persons providing mortgage brokerage services. Such
laws and regulations also typically require certain consumer protection
disclosures and compliance with loan solicitation procedures and a variety of
other practices, throughout the various stages of the mortgage solicitation,
application and approval process.
 
    In addition to state law, mortgage brokerage services are heavily regulated
by federal law. For example, the Real Estate Settlement Procedures Act
("RESPA"), prohibits the payment and receipt of mortgage loan referral fees.
RESPA, however, does permit persons to be compensated for the fair market value
of non-referral services actually rendered.
 
    We expect to introduce our home mortgage service in the first quarter of
1999. LendingTree will serve as the mortgage broker and will provide all
mortgage brokerage services. We will provide and maintain the home mortgage
service on our Web site and will develop and purchase all advertising.
LendingTree will compensate us for the fair market value of our non-referral
services. We believe that offering the home mortgage service does not require
our registration under or compliance with the mortgage or similar brokerage laws
of any jurisdiction. However, it is possible that one or more regulatory
authorities could seek to enforce existing laws, or otherwise enact new
legislation, requiring our registration and compliance and could scrutinize our
compensation arrangement with LendingTree under RESPA or other federal or state
laws. Such action could severely interfere with the conduct of our business.
 
    LendingTree will provide the mortgage brokerage services offered through the
home mortgage service on our Web site and will maintain the necessary and
appropriate state registrations and licenses associated with LendingTree's
provision of those mortgage brokerage services. If a state or federal regulatory
authority, or an aggrieved customer, should in the future claim that LendingTree
has failed to comply fully with applicable state or federal law requirements
pertaining to LendingTree's provision of mortgage brokerage services, our home
mortgage service could be materially and adversely affected and we may be unable
to continue to make our home mortgage service available.
 
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<PAGE>
    CONSUMER PROTECTION AND RELATED LAWS
 
    All of our services are subject to federal and state consumer protection
laws and regulations prohibiting unfair and deceptive trade practices. We are
also subject to related "plain language" statutes in place in many
jurisdictions, which require the use of simple, easy to read, terms and
conditions in contracts with consumers.
 
    Although there are very few laws and regulations directly applicable to the
protection of consumers in an online environment, it is possible that
legislation will be enacted in this area and could cover such topics as
permissible online content and user privacy (including the collection, use,
retention and transmission of personal information provided by an online user).
Furthermore, the growth and demand for online commerce could result in more
stringent consumer protection laws that impose additional compliance burdens on
online companies. Such consumer protection laws could result in substantial
compliance costs and interfere with the conduct of our business.
 
    BUSINESS QUALIFICATION LAWS
 
    Because our service is available over the Internet in multiple states, and
because we sell to numerous consumers resident in such states, such
jurisdictions may claim that we are required to qualify to do business as a
foreign corporation in each such state. We are qualified to do business in a
limited number of states, and our failure to qualify as a foreign corporation in
a jurisdiction where we are required to do so could subject us to taxes and
penalties for the failure to so qualify.
 
    INTERNATIONAL EXPANSION
 
    We intend to explore opportunities for expanding our business into
international markets. It is possible, however, that the priceline.com demand
collection system will not be readily adaptable to the regulatory environments
of certain foreign jurisdictions. In addition, there are various other risks
associated with international expansion. They include language barriers,
unexpected changes in regulatory requirements, trade barriers, problems in
staffing and operating foreign operations, changes in currency exchange rates,
difficulties in enforcing contracts and other legal rights, economic and
political instability and problems in collection.
 
TAX UNCERTAINTIES
 
    POTENTIAL FEDERAL AIR TRANSPORTATION TAX LIABILITY
 
    Currently, a federal air transportation tax is imposed upon the sale of
airline tickets and generally is collected by the airlines selling the tickets.
The tax is based upon a percentage of the cost of transportation, which was 9%
for periods prior to October 1, 1998 and 8% thereafter. Because of the unique
pricing structures employed in the priceline.com service (I.E., the amount paid
by the customer for a ticket being different than the amount charged by the
airline for the same ticket with the excess payment, if any, going to us as a
charge for the use of our proprietary business method), it is not clear how this
federal tax should be calculated when sales occur using the priceline.com
service. We have been calculating this tax based on the price charged by the
airline for a ticket, rather than the price paid by the customer. There is a
possibility that current law requires computation of the tax based on the price
paid by the customer to us. Due to the uncertainty of how the federal air
transportation tax applies to sales of airline tickets using the priceline.com
service, we have submitted a written request to the United States Internal
Revenue Service seeking a determination of our federal air transportation tax
obligations. Such determination may not be favorable and may require us to
collect the federal air transportation tax on the total amount paid by consumers
for air travel.
 
    We potentially owe approximately $56,000 in additional taxes relating to our
method of calculating the tax. We have accrued for such potential liability in
our combined balance sheet as of September 30, 1998 and are providing for such
potential liability on an ongoing basis. We have agreed to indemnify and hold
 
                                       15
<PAGE>
harmless certain of our participating airlines from any liability with respect
to such taxes as well as to secure the payment of such taxes by a letter of
credit.
 
    STATE TAXES
 
    We file tax returns in such states as required by law based on principles
applicable to traditional businesses. In addition, we do not collect sales or
other similar taxes in respect of transactions conducted through the
priceline.com service (other than the federal air transportation tax referred to
above). However, one or more states could seek to impose additional income tax
obligations or sales tax collection obligations on out-of-state companies, such
as ours, which engage in or facilitate online commerce. A number of proposals
have been made at state and local levels that could impose such taxes on the
sale of products and services through the Internet or the income derived from
such sales. Such proposals, if adopted, could substantially impair the growth of
e-commerce and adversely affect our opportunity to become profitable.
 
    Legislation limiting the ability of the states to impose taxes on
Internet-based transactions recently has been enacted by the United States
Congress. However, this legislation, known as the Internet Tax Freedom Act,
imposes only a three-year moratorium (commencing October 1, 1998 and ending on
October 21, 2001) on state and local taxes on (i) electronic commerce where such
taxes are discriminatory and (ii) Internet access unless such taxes were
generally imposed and actually enforced prior to October 1, 1998. Currently, we
do not pay any such taxes. It is possible that the tax moratorium could fail to
be renewed prior to October 21, 2001. Failure to renew this legislation would
allow various states to impose taxes on Internet-based commerce. The imposition
of such taxes could adversely affect our ability to become profitable.
 
CONTROL BY CURRENT STOCKHOLDERS
 
    Upon consummation of this offering, Mr. Jay S. Walker, the Founder and Vice
Chairman of priceline.com, and Mr. Richard S. Braddock, Chief Executive Officer
of priceline.com, together with their respective affiliates, will beneficially
own approximately    and       percent, respectively (      and       percent,
respectively, if the Underwriters' over-allotment option is exercised in full),
of our outstanding Common Stock, subject to certain adjustments. As a result, if
Messrs. Walker and Braddock act together, they will have the ability to control
the outcome on all matters requiring stockholder approval (including the
election and removal of directors and any merger, consolidation or sale of all
or substantially all of our assets) and to control our management and affairs.
Such control could discourage others from initiating potential merger, takeover
or other change of control transactions. As a result, the market price of our
Common Stock could be adversely affected. See "Management," "Principal
Stockholders" and "Certain Transactions."
 
FUTURE CAPITAL NEEDS
 
    Based on our current operating plan, we anticipate that the net proceeds of
this offering, together with our available funds, will be sufficient to satisfy
our anticipated needs for working capital, capital expenditures and business
expansion for at least the next three years. After that time, we may need
additional capital. Alternatively, we may need to raise additional funds sooner
in order to fund more rapid expansion, to develop new or enhanced services, or
to respond to competitive pressures. If we raise additional funds by issuing
equity or convertible debt securities, the percentage ownership of our
stockholders will be diluted. Furthermore, any new securities could have rights,
preferences and privileges senior to those of the Common Stock.
 
    We currently do not have any commitments for additional financing. We cannot
be certain that additional financing will be available when and to the extent
required or that, if available, it will be on acceptable terms. If adequate
funds are not available on acceptable terms, we may not be able to fund our
expansion, develop or enhance our products or services or respond to competitive
pressures. See "Use of
 
                                       16
<PAGE>
Proceeds" and "Management's Discussion and Analysis of Financial Condition and
Results of Operations -- Liquidity and Capital Resources."
 
SHARES ELIGIBLE FOR FUTURE SALE
 
    After this offering, we will have outstanding       shares of Common Stock
(    shares if the Underwriters' over-allotment option is exercised in full),
and we will have reserved an additional   shares of Common Stock for issuance
pursuant to outstanding stock options and warrants. All of the shares of Common
Stock to be sold in this offering will be freely tradable without restriction or
further registration under the federal securities laws unless purchased by our
"affiliates," as that term is defined in Rule 144 under the Securities Act of
1933, as amended. The remaining shares of outstanding Common Stock, representing
approximately   of the outstanding Common Stock upon completion of this
offering, will be "restricted securities" under the Securities Act subject to
restrictions on the timing, manner and volume of sales of such shares.
 
    Our directors, executive officers, key employees and substantially all of
our current stockholders have agreed, subject to certain limited exceptions, for
a period of 180 days after the date of this Prospectus, that they will not,
without the prior written consent of Morgan Stanley & Co. Incorporated, directly
or indirectly, offer to sell, sell or otherwise dispose of any shares of Common
Stock. See "Underwriters." Subject to the foregoing lock-up agreements, holders
of up to     shares of Common Stock and securities convertible into or
exercisable for shares of Common Stock will have the right to request the
registration of their shares under the Securities Act. Upon the effectiveness of
such registration, all shares covered by such registration statement will be
freely transferable. Following the consummation of this offering, we also intend
to file a registration statement on Form S-8 under the Securities Act covering
19,100,000 shares of Common Stock reserved for issuance under the 1997 Omnibus
Plan and 7,500,000 shares of Common Stock reserved for issuance under the 1999
Omnibus Plan; such registration statement will automatically become effective
upon filing. Of the number of shares subject to outstanding options at December
23, 1998, 8,322,792 options have vested as of such date. Accordingly, subject to
the exercise of such options, shares registered under such registration
statement will be available for sale in the open market immediately after the
180-day lock-up agreements expire. See "Description of Capital Stock --
Registration Rights" and "Shares Eligible for Future Sale."
 
    We cannot predict if future sales of our Common Stock, or the availability
of our Common Stock for sale, will adversely affect the market price for our
Common Stock or our ability to raise capital by offering equity securities. See
"Shares Eligible for Future Sale" and "Underwriters."
 
CERTAIN ANTI-TAKEOVER PROVISIONS
 
    Our Board of Directors also will have the authority to issue up to 150,000
additional shares of Preferred Stock and to determine the price and the terms
(including preferences and voting rights) of those shares without stockholder
approval. Although we have no current plans to issue additional shares of
Preferred Stock, any such issuance could:
 
    - have the effect of delaying, deferring or preventing a change in control
      of our Company;
 
    - discourage bids for our Common Stock at a premium over the market price;
      or
 
    - adversely affect the market price of, and the voting and other rights of
      the holders of, our Common Stock.
 
    We are subject to certain Delaware laws that could have the effect of
delaying, deterring or preventing a change in control of our Company. One of
these laws prohibits us from engaging in a business combination with any
interested stockholder for a period of three years from the date the person
became an interested stockholder, unless certain conditions are met. In
addition, certain provisions of our Certificate of Incorporation and By-laws,
and the significant amount of Common Stock held by our
 
                                       17
<PAGE>
executive officers, directors and affiliates, could together have the effect of
discouraging potential takeover attempts or making it more difficult for
stockholders to change management. See "Description of Capital Stock."
 
BROAD MANAGEMENT DISCRETION OVER ALLOCATION OF PROCEEDS
 
    The net proceeds of this offering are estimated to be approximately $
million (approximately $  million, if the Underwriters' over-allotment option is
exercised in full) at an assumed initial public offering price of $  per share
and after deducting the estimated underwriting discount and estimated offering
expenses. Our management will retain broad discretion as to the allocation of
the proceeds of this offering. See "Use of Proceeds."
 
IMMEDIATE AND SUBSTANTIAL DILUTION
 
    The initial public offering price is expected to be substantially higher
than the net tangible book value of each outstanding share of Common Stock.
Purchasers of Common Stock in this offering will suffer immediate and
substantial dilution. The dilution will be $  per share in the net tangible book
value of the Common Stock from the expected initial public offering price. If
outstanding options and warrants to purchase shares of Common Stock are
exercised, there could be further dilution. See "Dilution."
 
               SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS
 
    Some of the statements under "Prospectus Summary," "Risk Factors,"
"Management's Discussion and Analysis of Financial Condition and Results of
Operations," "Business" and elsewhere in this Prospectus constitute
forward-looking statements. These statements involve known and unknown risks,
uncertainties and other factors that may cause our actual results, levels of
activity, performance, or achievements to be materially different from any
future results, levels of activity, performance, or achievements expressed or
implied by such forward-looking statements. Such factors include, among other
things, those listed under "Risk Factors" and elsewhere in this Prospectus.
 
    In some cases, you can identify forward-looking statements by terminology
such as "may," "will," "should," "could," "expects," "plans," "anticipates,"
"believes," "estimates," "predicts," "potential," or "continue" or the negative
of such terms or other comparable terminology.
 
    Although we believe that the expectations reflected in the forward-looking
statements are reasonable, we cannot guarantee future results, levels of
activity, performance, or achievements. Moreover, neither we nor any other
person assumes responsibility for the accuracy and completeness of such
statements. We are under no duty to update any of the forward-looking statements
after the date of this Prospectus.
 
                                       18
<PAGE>
                                USE OF PROCEEDS
 
    The primary purposes of this offering are to obtain additional capital,
create a public market for the Common Stock and facilitate future access to
public markets. The net proceeds to the Company from the sale of the
shares of Common Stock offered hereby are estimated to be approximately $
million (approximately $      million, if the Underwriters' over-allotment
option is exercised in full), assuming an initial public offering price of $
per share and after deducting estimated offering expenses of $    and the
underwriting discount payable by the Company. The Company intends to use the
remainder of the net proceeds, over time, for general corporate purposes,
including working capital to fund anticipated operating losses, expenses
associated with our advertising campaigns, brand-name promotions and other
marketing efforts and capital expenditures. The Company also could use a portion
of the net proceeds, currently intended for general corporate purposes, to
acquire or invest in businesses, technologies, products or services, although no
specific acquisitions are planned and no portion of the net proceeds has been
allocated for any acquisition. As of the date of this Prospectus, the Company
cannot specify with certainty the particular uses for the net proceeds to be
received upon the consummation of this offering. Accordingly, the Company's
management will have broad discretion in the application of the net proceeds.
Pending such uses, the Company intends to invest the net proceeds from this
offering in short-term, interest-bearing, investment-grade securities. See "Risk
Factors -- Future Capital Needs" and "Risk Factors -- Broad Management
Discretion Over Allocation of Proceeds."
 
                                DIVIDEND POLICY
 
    The Company has not declared or paid any cash dividends on its capital stock
since its inception and does not expect to pay any cash dividends in the
foreseeable future. The Company currently intends to retain future earnings, if
any, to finance the expansion of its business.
 
                                       19
<PAGE>
                                 CAPITALIZATION
 
    The following table sets forth the capitalization of the Company as of
September 30, 1998: (i) on an actual basis; (ii) on a pro forma basis to reflect
the issuance of shares of Series B Convertible Preferred Stock in December 1998
and the merger of priceline.com and Priceline Travel, Inc. ("Priceline Travel");
and (iii) on a pro forma basis as adjusted to reflect (a) the conversion of all
outstanding shares of Convertible Preferred Stock into Common Stock upon the
consummation of this offering and (b) the receipt by the Company of the
estimated net proceeds from the sale of the     shares of Common Stock offered
hereby at an assumed initial public offering price of $    per share (after
deducting the estimated offering expenses and underwriting discount). This table
should be read in conjunction with "Management's Discussion and Analysis of
Financial Condition and Results of Operations" and the Combined Financial
Statements and related Notes thereto included elsewhere in this Prospectus.
 
<TABLE>
<CAPTION>
                                                                                        AS OF
                                                                                  SEPTEMBER 30, 1998
                                                                     --------------------------------------------
<S>                                                                  <C>            <C>             <C>
                                                                                                         PRO
                                                                                         PRO          FORMA AS
                                                                        ACTUAL          FORMA         ADJUSTED
                                                                     -------------  --------------  -------------
Long-Term Debt--net................................................  $     989,396  $      989,396  $
Capital Lease Obligations--net of current portion..................         32,649          32,649
                                                                     -------------  --------------  -------------
    Total debt.....................................................      1,022,045       1,022,045
Stockholders' equity:
Common Stock, priceline.com, $0.01 par value--Authorized,
  150,000,000 shares; issued and outstanding, 74,409,902,
  74,409,902 and       , actual, pro forma and pro forma as
  adjusted, respectively; Priceline Travel, $1.00 par value--3,000
  shares authorized, issued and outstanding 3,000, 0, and 0 actual,
  pro forma and pro forma as adjusted, respectively................        747,099(1)        744,099
Preferred Stock, Series A Convertible, $0.01 par value, $1.16
  liquidation value-- Authorized, 30,000,000 shares; issued and
  outstanding, 17,288,684, 17,288,684 and 0, actual, pro forma and
  pro forma as adjusted, respectively..............................        172,887         172,887
Preferred Stock, Series B Convertible, $0.01 par value, $4.00
  liquidation value--Authorized, 13,837,500 shares; issued and
  outstanding, 0, 13,837,500 and 0, actual, pro forma and pro forma
  as adjusted, respectively........................................       --               138,375
Additional paid-in capital.........................................     53,285,081     108,499,706
Accumulated deficit................................................    (41,052,033)    (41,052,033)
                                                                     -------------  --------------  -------------
    Total stockholders' equity.....................................     13,153,034      68,503,034
                                                                     -------------  --------------  -------------
      Total capitalization.........................................  $  14,175,079  $   69,525,079  $
                                                                     -------------  --------------  -------------
                                                                     -------------  --------------  -------------
</TABLE>
 
- ------------------------
 
(1) Excludes (i) 17,419,375 shares of Common Stock issuable on exercise of
    options outstanding as of December 23, 1998, with a weighted average
    exercise price of $1.07 per share; (ii) 9,180,625 additional shares of
    Common Stock reserved for issuance under the 1997 Omnibus Plan and the
    proposed 1999 Omnibus Plan; (iii) 15,114,083 shares of Common Stock issuable
    upon exercise of outstanding warrants at an exercise price of approximately
    $1.16 per share; (iv) 50,000 shares of Common Stock issuable upon exercise
    of outstanding warrants at an exercise price of $1.00 per share and (v)
    100,000 shares of Common Stock issuable upon exercise of outstanding
    warrants at no exercise price. See "Management -- Stock Based Plans --
    Priceline.com Incorporated 1997 Omnibus Plan" and "-- Summary of
    Compensation," "Business -- Strategic Alliances" and Notes 6 and 7 of Notes
    to Combined Financial Statements.
 
                                       20
<PAGE>
                                    DILUTION
 
    The pro forma net tangible book value of the Company as of September 30,
1998 was $  , or $  per share. "Pro forma net tangible book value per share" is
determined by dividing the pro forma number of outstanding shares of Common
Stock into the net tangible book value of the Company (total tangible assets
less total liabilities). Assuming the sale by the Company of the shares of
Common Stock being offered hereby at an assumed initial public offering price of
$  per share and after deducting the estimated underwriting discount and
estimated offering expenses, the pro forma net tangible book value of the
Company as of September 30, 1998 would have been approximately $  , or $  per
share. This represents an immediate increase in pro forma net tangible book
value of $  per share to existing stockholders and an immediate dilution of $
per share to new investors purchasing shares at the initial public offering
price. The following table illustrates the per share dilution:
 
<TABLE>
<S>                                                           <C>        <C>
Assumed initial public offering price per share.............             $
 
  Pro forma net tangible book value per share as of
    September 30, 1998......................................  $
 
  Increase in pro forma net tangible book value per share
    attributable to new investors...........................  $
                                                              ---------
 
Pro forma net tangible book value per share after the
  offering..................................................             $
                                                                         ---------
 
Dilution per share to new investors.........................             $
                                                                         ---------
                                                                         ---------
</TABLE>
 
    The following table summarizes as of September 30, 1998, on the pro forma
basis described above, the number of shares of capital stock purchased from the
Company, the total consideration paid to the Company and the average price per
share paid by existing stockholders and by investors purchasing shares of Common
Stock in this offering at an assumed initial public offering price of $
(before deducting the estimated underwriting discount and estimated offering
expenses):
 
<TABLE>
<CAPTION>
                                            SHARES PURCHASED(1)
                                                                      TOTAL CONSIDERATION     AVERAGE
                                          ------------------------  -----------------------    PRICE
                                            NUMBER       PERCENT      AMOUNT      PERCENT    PER SHARE
                                          -----------  -----------  ----------  -----------  ----------
 
<S>                                       <C>          <C>          <C>         <C>          <C>
Existing stockholders...................                         %  $                     %  $
 
New investors...........................                         %  $                     %  $
                                                 ---          ---   ----------         ---   ----------
 
Total...................................                         %  $                     %  $
                                                 ---          ---   ----------         ---   ----------
                                                 ---          ---   ----------         ---   ----------
</TABLE>
 
- ------------------------
 
(1) Sale by the Company of additional shares of Common Stock upon exercise in
    full of the underwriters' over-allotment option will reduce the percentage
    of Common Stock held by existing stockholders to       % of the total number
    of shares of Common Stock to be outstanding after this offering and will
    increase the number of shares of Common Stock held by new investors to
          shares or       % of the total number of shares of Common Stock to be
    outstanding after this offering. See "Principal Stockholders."
 
    The foregoing discussion and tables assume no exercise of any stock options
or warrants outstanding as of September 30, 1998. As of September 30, 1998,
there were options outstanding to purchase a total of 17,037,042 shares of
Common Stock with a weighted average exercise price of $1.00 per share and
warrants outstanding to purchase a total of 15,264,083 shares of Common Stock
with a weighted average purchase price of $1.15 per share. In addition, since
September 30, 1998, the Company issued options to purchase an aggregate of
382,333 shares of Common Stock. To the extent that any of these options or
warrants are exercised, there would be further dilution to new public investors.
See "Capitalization," "Management -- Employee Benefit Plans" and Notes 7 and 8
of Notes to Combined Financial Statements.
 
                                       21
<PAGE>
                        SELECTED COMBINED FINANCIAL DATA
 
    The following selected combined financial data should be read in conjunction
with the combined financial statements of priceline.com and Priceline Travel and
related notes thereto and "Management's Discussion and Analysis of Financial
Condition and Results of Operations" included elsewhere in this Prospectus. The
combined statement of operations data for the nine months ended September 30,
1998 and the period July 18, 1997 (Inception) to December 31, 1997 and the
combined balance sheet data as of September 30, 1998 are derived from the
combined financial statements of priceline.com and Priceline Travel included
elsewhere in this Prospectus. The Company's travel agency license is held by
Priceline Travel and all of the Company's airline ticket sales have been
effected through Priceline Travel, which will be merged with and into the
Company prior to the consummation of this offering. Accordingly, the financial
statements of Priceline Travel are presented on a combined basis with
priceline.com for all relevant periods.
 
<TABLE>
<CAPTION>
                                                                                    NINE MONTHS     JULY 18, 1997
                                                                                       ENDED         (INCEPTION)
                                                                                   SEPTEMBER 30,   TO DECEMBER 31,
                                                                                        1998            1997
                                                                                   --------------  ---------------
<S>                                                                                <C>             <C>
COMBINED STATEMENT OF OPERATIONS DATA:
Revenues.........................................................................  $   16,243,733   $    --
Cost of revenues.................................................................      16,793,797        --
                                                                                   --------------  ---------------
    Gross profit (loss)..........................................................        (550,064)       --
Expenses:
  Sales and marketing............................................................      15,925,101         441,479
  General and adminstrative......................................................      14,198,661       1,011,600
  Systems and business development...............................................       8,168,984       1,060,091
                                                                                   --------------  ---------------
    Total expenses...............................................................      38,292,746       2,513,170
                                                                                   --------------  ---------------
Operating loss...................................................................     (38,842,810)     (2,513,170)
Interest income (expense), net...................................................         304,259            (312)
                                                                                   --------------  ---------------
Net income (loss)................................................................  $  (38,538,551)  $  (2,513,482)
                                                                                   --------------  ---------------
                                                                                   --------------  ---------------
 
Net loss per common share........................................................  $        (0.62)  $       (0.06)
                                                                                   --------------  ---------------
                                                                                   --------------  ---------------
 
Weighted average common shares outstanding.......................................      61,767,845      40,667,005
</TABLE>
 
<TABLE>
<CAPTION>
                                                                               AS OF SEPTEMBER 30, 1998
                                                                     --------------------------------------------
                                                                                                         PRO
                                                                                          PRO          FORMA AS
                                                                         ACTUAL         FORMA(1)     ADJUSTED(2)
                                                                     --------------  --------------  ------------
<S>                                                                  <C>             <C>             <C>
COMBINED BALANCE SHEET DATA:
Cash and cash equivalents..........................................  $   10,081,313  $   65,431,313
Working capital....................................................       8,514,760      63,864,760
Total assets.......................................................      19,680,716      75,030,716
Total liabilities..................................................       6,527,682       6,527,682
Total stockholders' equity.........................................      13,153,034      68,503,034
</TABLE>
 
- ------------------------------
 
(1) Reflects the issuance of shares of Series B Convertible Preferred Stock in
    December 1998.
 
(2) Reflects (i) the conversion of all outstanding shares of Convertible
    Preferred Stock into Common Stock upon the consummation of this offering,
    and (ii) the receipt by the Company of the estimated net proceeds from the
    sale of the     shares of Common Stock offered hereby at an assumed initial
    public offering price of $    per share (after deducting the estimated
    offering expenses and underwriting discount).
 
                                       22
<PAGE>
                      MANAGEMENT'S DISCUSSION AND ANALYSIS
                OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS
 
    THIS PROSPECTUS CONTAINS FORWARD-LOOKING STATEMENTS THAT INVOLVE RISKS AND
UNCERTAINTIES. ACTUAL EVENTS OR RESULTS MAY DIFFER MATERIALLY FROM THOSE
INDICATED IN SUCH FORWARD-LOOKING STATEMENTS. SEE "SPECIAL NOTE REGARDING
FORWARD-LOOKING STATEMENTS."
 
    THE FOLLOWING DISCUSSION OF THE FINANCIAL CONDITION AND RESULTS OF
OPERATIONS OF THE COMPANY ALSO SHOULD BE READ IN CONJUNCTION WITH THE COMBINED
FINANCIAL STATEMENTS AND RELATED NOTES THERETO INCLUDED ELSEWHERE IN THIS
PROSPECTUS.
 
OVERVIEW
 
    Priceline.com has pioneered a unique new type of e-commerce known as a
"demand collection system" that enables consumers to use the Internet to save
money on a wide range of products and services while enabling sellers to
generate incremental revenue. Using a simple and compelling consumer
proposition--"name your price," the Company collects consumer demand (in the
form of individual customer offers guaranteed by a credit card) for a particular
product or service at a price set by the customer and communicates that demand
directly to participating sellers or to their private databases. Consumers agree
to hold their offers open for a specified period of time to enable priceline.com
to fulfill their offers from inventory provided by participating sellers. Once
fulfilled, offers generally cannot be canceled. Priceline.com benefits consumers
by enabling them to save money, while at the same time benefitting sellers by
providing them with an effective revenue management tool capable of identifying
and capturing incremental revenues. By requiring consumers to be flexible with
respect to brands, sellers and product features, priceline.com enables sellers
to generate incremental revenue without disrupting their existing distribution
channels or retail pricing structures.
 
    The Company was formed in July 1997 and its primary activities during the
period prior to launch consisted of recruiting and training employees,
developing its business model, implementing systems to support its business
model, developing relationships with seller participants and developing the
priceline.com brand. The Company commenced operations in April 1998 with the
sale of leisure airline tickets. The Company's service offerings have since been
expanded to also include hotel room reservations, and, on a test basis, the sale
of new automobiles. During the first quarter of 1999, we expect to offer home
mortgages. The number of employees of the Company increased from 10 to 113
during the period from inception through the nine months ended September 30,
1998, and the Company currently has 124 employees.
 
    The Company generates revenues from the completion of transactions through
the priceline.com service; however, the manner in which it derives revenues
varies from product to product. With respect to airline and hotel reservation
services, the Company earns the spread between the customer's named price and
the fare or rate charged by the seller. With respect to the automobile service,
the Company earns a fixed fee from both the customer and the seller. With
respect to the home mortgage service, the Company expects to receive a payment
equal to a percentage of the net revenue generated from the mortgage program,
which is operated in conjunction with the LendingTree, Inc. ("LendingTree"). The
Company also generates revenues through adaptive marketing programs with third
parties that pay the Company fees for marketing their customer acquisition
programs. Fees from adaptive marketing promotions currently consist primarily of
fees paid by a third-party credit card issuer for qualifying credit card
applications submitted through the priceline.com service in connection with
offers for airline tickets.
 
    The Company recognizes revenue differently depending on the nature of the
transaction. In the case of airline tickets and other travel products,
priceline.com is the merchant of record and, accordingly, records as revenue the
amount it collects from the customer, net of the federal air transportation tax,
segment fees and passenger facility charges imposed in connection with the sale
of airline tickets (collectively "Transportation Taxes and Fees"). The Company
records as cost of revenues the amount paid
 
                                       23
<PAGE>
to airlines or other suppliers, net of Transportation Taxes and Fees. In the
case of new cars and financial services, where the Company acts as the
intermediary between the buyer and the seller, and in adaptive marketing
programs, where the Company is paid a fee by third parties in connection with
customer acquisition programs, the Company records as revenue only the fee or
other third-party payment that it receives in connection with the transaction,
and not the value of the underlying sale.
 
    During the period from launch through September 30, 1998, priceline.com
collected guaranteed offers for approximately 1.1 million airline tickets,
representing approximately $243.9 million in total consumer demand, resulting in
sales of approximately 67,275 airline tickets, representing approximately $15.5
million in revenue. Priceline.com's offer fulfillment rate for airline tickets
has been constrained by the availability of airline inventory, which initially
was limited by the inclusion of only Trans World Airlines ("TWA") and America
West Airlines ("America West") as participating domestic carriers. With the
addition of Delta Air Lines ("Delta") in mid-September 1998, priceline.com has
expanded its potential inventory breadth to cover more domestic markets and has
increased the depth of potential inventory in markets that were already served.
The Company believes that it can increase the amount of ticket sales and improve
its offer fulfillment rate as its business matures by (i) expanding the depth
and breadth of airline ticket inventory, (ii) demonstrating to airlines how they
can utilize revenue management strategies to fulfill a larger share of
reasonable offers, and (iii) expanding adaptive marketing programs to help
increase the number of completed transactions.
 
    Since its inception, the Company has incurred net losses in each fiscal
quarter and, as of September 30, 1998, had an accumulated deficit of $41.1
million. The Company believes that its continued growth will depend in large
part on its ability to continue to promote the priceline.com brand and to apply
the priceline.com business model to a wide range of products and services.
Accordingly, the Company intends to continue to invest heavily in marketing and
promotion, technology and personnel. As a result, the Company expects to incur
additional losses for the foreseeable future. See "Risk Factors -- History of
Losses and Anticipated Continuing Losses." In addition, the Company's limited
operating history makes the prediction of future results of operations
difficult, and accordingly, there can be no assurance that the Company will
achieve or sustain revenue growth or profitability. See "Risk Factors --
Potential Fluctuations in Results of Operations; Difficulty in Predicting
Results of Operations."
 
    The Company presently is engaged in discussions with Delta regarding, among
other things, potential amendments to the terms of the warrant to purchase
Common Stock issued to Delta (the "Delta Warrant") and in discussions with
certain other domestic airlines concerning the potential issuance of equity
securities to such airlines. The Company anticipates that such amendments to the
Delta Warrant and other equity issuances may be finalized prior to January 1,
1999, and if consummated, would result in a one-time non-cash charge for the
Company in the fourth quarter of 1998.
 
    The Company's travel agency license is held by Priceline Travel, a separate
company owned by Mr. Jay S. Walker, the Company's Founder and Vice Chairman, and
all of the Company's airline ticket sales have been effected through Priceline
Travel, which will be merged with and into the Company prior to the consummation
of this offering. Accordingly, the financial statements of Priceline Travel are
presented on a combined basis with priceline.com for all relevant periods.
 
RESULTS OF OPERATIONS
 
NINE MONTHS ENDED SEPTEMBER 30, 1998
 
    The Company was formed in July 1997, but did not commence operations until
April 1998. Because of the Company's limited operating history, comparisons with
prior periods are not meaningful.
 
                                       24
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    REVENUES
 
    Total revenues for the nine month period ended September 30, 1998 were $16.2
million. Since commencement of operations in April 1998, essentially all
revenues consisted of airline ticket sales and related adaptive marketing
programs. Approximately $700,000 of total revenues are attributable to adaptive
marketing programs, substantially all of which are attributable to the Company's
third-party credit card marketing program. The Company expects the portion of
revenues attributable to adaptive marketing programs to increase in future
periods. The Company's automobile sales service, which was launched on a test
basis in the New York metropolitan area in July 1998, did not contribute
materially to revenues during the period.
 
    COST OF REVENUES AND GROSS PROFIT (LOSS)
 
    Cost of revenues for the nine month period ended September 30, 1998 totaled
$16.8 million. Cost of revenues represents costs of goods paid to the Company's
airline ticket suppliers, net of Transportation Taxes and Fees. Gross profit
(loss), which is comprised of revenues less cost of revenues, was ($550,064) for
the nine month period ended September 30, 1998. The Company's business model
enables it to manage the level of gross margins by controlling the price at
which it will cause offers to be fulfilled. The Company has chosen to sell a
substantial number of tickets below its cost in order to increase revenues,
build a record of successful transactions, and enhance the priceline.com brand.
Consequently, the Company's aggregate gross margins on airline ticket sales were
negative during the period from launch through September 30, 1998. As the
Company matures, the Company expects to reduce the percentage of airline tickets
sold below its cost and to improve its overall gross margins. The Company
anticipates that revenues from adaptive marketing programs will increase
significantly in the fourth quarter of 1998 resulting in a gross profit for the
fourth quarter (and for the full year) as compared to a gross loss for the nine
month period.
 
    OPERATING EXPENSES
 
    SALES AND MARKETING.  Sales and marketing expenses for the nine month period
ended September 30, 1998 totaled $15.9 million, or 98.0% of revenues.
Approximately 67.0% of sales and marketing expenses were comprised of radio and
newspaper advertising expenses. The balance was comprised of fees payable to a
third party service provider, which operates the Company's call center, credit
card fees, and compensation for the Company's sales and marketing personnel.
 
    SYSTEMS AND BUSINESS DEVELOPMENT.  Systems and business development expenses
for the nine month period ended September 30, 1998 totaled $8.2 million, or
50.3% of revenues. Systems and business development expenses are comprised
primarily of compensation to the Company's information technology and product
development staff and payments to outside contractors, data communications and
other expenses associated with operating the Company's Web site and, to a lesser
extent, depreciation on computer hardware and licensing fees for computer
software.
 
    GENERAL AND ADMINISTRATIVE.  General and administrative expenses for the
nine month period ended September 30, 1998 totaled $14.2 million or 87.4% of
revenues. General and administrative expenses consist primarily of compensation
for personnel, fees for outside professionals, telecommunications and other
overhead costs, including occupancy expense. Also included is a one-time
non-cash charge of $6.5 million relating to the issuance to Mr. Richard S.
Braddock of a profits interest with respect to 6.5 million units in the
Company's predecessor, priceline.com LLC ("priceline.com LLC"). These units were
granted to Mr. Braddock in connection with his joining the Company, and were
subsequently converted into an equivalent number of shares of Common Stock.
 
                                       25
<PAGE>
    INTEREST INCOME (EXPENSE), NET
 
    Interest income (expense), net for the nine month period ended September 30,
1998 totaled $0.30 million, reflecting approximately $0.37 million of interest
income earned by the Company on its cash balances, net of interest expense for
the period.
 
PERIOD ENDED DECEMBER 31, 1997
 
    During the period from its formation in July 1997 through December 31, 1997,
the Company was engaged in start-up activities and incurred $2.5 million of
operating expenses. No revenues were earned during the period. As of December
31, 1997, the Company had a cumulative net loss of $2.5 million.
 
QUARTERLY RESULTS OF OPERATIONS
 
    The Company's quarterly operating results will be affected by a variety of
factors, many of which are outside the Company's control. Factors that may
affect the Company's quarterly operating results include: (i) the Company's
ability to increase both consumers' and sellers' use of the priceline.com
service; (ii) the Company's ability to attract new sellers of products and
services to participate in the priceline.com service; (iii) the Company's
ability to expand the products and services offered; (iv) the fulfillment rate
of customers' offers; (v) the results of our adaptive marketing programs; (vi)
the announcement or introduction of new sites, services and products by the
Company's competitors; (vii) the success of the Company's brand building and
marketing campaigns; (viii) price competition in the sale of products and
services offered over the priceline.com system; (ix) increasing consumer
confidence in and acceptance of the Internet and other online services for
commerce and, in particular, the online purchase of products and services such
as those offered by the priceline.com service; (x) the Company's ability to
upgrade and develop its systems and infrastructure to accommodate growth; (xi)
the Company's ability to attract new personnel in a timely and effective manner;
(xii) the occurrence of technical difficulties or service interruptions; (xiii)
the amount and timing of operating costs and capital expenditures relating to
expansion of the Company's business, operations and infrastructure; (xiv)
changes in governmental regulation by federal or local governments; and (xv)
general economic conditions and economic conditions specific to the Internet and
online commerce industries, as well as the individual industries, for the
products and services sold through the priceline.com system.
 
    As a result of the Company's limited operating history and the emerging
nature of the market for online commerce, it is difficult for the Company to
forecast its revenues or earnings accurately. In addition, the Company has no
backlog, with virtually all of the Company's revenues for a particular quarter
being derived from offers that are made and accepted during that quarter. The
Company's current and future expense levels are based largely on its investment
plans and estimates of future revenues and are, to a large extent, fixed. The
Company may be unable to adjust spending in a timely manner to compensate for
any unexpected revenue shortfall. Accordingly, any significant shortfall in
revenues relative to the Company's planned expenditures would have an immediate
adverse effect on the Company's business, results of operations and financial
condition.
 
    The Company's limited operating history and rapid growth makes it difficult
for the Company to assess the impact of seasonal factors on its business.
Nevertheless, the Company expects its business to be subject to seasonal
fluctuations, reflecting a combination of seasonality trends for the products
and services offered by the priceline.com service and seasonality patterns
affecting Internet use. For example, with regard to the Company's travel
products, demand for leisure travel may increase over summer vacations and
holiday periods, while Internet usage may decline during the summer months. The
Company's results also may be affected by seasonal fluctuations in the inventory
made available to the priceline.com service by participating sellers. Airlines,
for example, typically enjoy high demand for tickets through traditional
distribution channels for travel during Thanksgiving and the year-end holiday
period. As a result, during those periods, airlines may have less excess
inventory to offer through priceline.com at discounted prices.
 
                                       26
<PAGE>
The Company's business also may be subject to cyclical variations for the
products and services offered; for example, leisure travel tends to decrease in
economic downturns.
 
    Due to the foregoing factors, the Company's quarterly revenues and operating
results are difficult to forecast. The Company believes that period-to-period
comparisons of its operating results may not be meaningful and should not be
relied upon as an indication of future performance. In addition, it is possible
that in one or more future quarters the Company's operating results will fall
below the expectations of securities analysts and investors. In such event, the
trading price of the Common Stock would almost certainly be materially adversely
affected.
 
LIQUIDITY AND CAPITAL RESOURCES
 
    Since its inception, the Company has financed its operations primarily
through the sale of equity securities. Net proceeds from these sales from
organization to December 23, 1998 totaled approximately $103.1 million. The
Company's initial equity capital of approximately $27.0 million was provided by
Mr. Jay S. Walker, other high net worth individuals and a partnership affiliated
with General Atlantic Partners, LLC ("GAP LLC"), a private equity fund that
invests worldwide in software and information technology companies. An
additional $20 million was invested by two partnerships affiliated with GAP LLC
in July 1998. On December 8, 1998, the Company received approximately $55.4
million in proceeds from the sale of equity securities in a private offering to
a group of corporate and institutional investors and high net worth individuals,
including two partnerships affiliated with GAP LLC, Vulcan Ventures,
Incorporated ("Vulcan"), Liberty PL, Inc. (a wholly owned subsidiary of Liberty
Media Corporation), Quantum Industrial Partners LDC (a fund managed by Soros
Fund Management, LLC) and Allen & Company, Incorporated. Allen & Company,
Incorporated also has served as the Company's financial advisor. At September
30, 1998, the Company's principal source of liquidity was approximately $10.1
million in cash and cash equivalents. Such cash reserves were subsequently
increased by the proceeds of the December 8, 1998 private placement.
 
    In April 1998, the Company received proceeds from a loan of $1.0 million for
working capital from a high net worth individual who also was issued a warrant
to purchase 50,000 shares of Common Stock at an exercise price of $1.00 per
share. This loan expires on April 15, 2003 and bears interest at a rate of 6.0%.
 
    Net cash used in operating activities was $30.1 million for the nine month
period ended September 30, 1998. Net cash used in operating activities was
primarily attributable to net losses.
 
    Net cash used in investing activities was $5.9 million for the nine month
period ended September 30, 1998. Net cash used in investing activities was
primarily related to purchases of property and equipment.
 
    Net cash provided by financing activities was $46.0 million for the nine
month period ended September 30, 1998. Net cash provided by financing activities
resulted primarily from the issuance of equity securities referred to above.
 
    The Company had no material commitments for capital expenditures at
September 30, 1998 but expects such expenditures to be at least $5.0 million in
1999. Such expenditures will be primarily for computer equipment, leasehold
improvements related to newly leased space and other property and equipment. The
Company believes that, based upon its current operating plan, its existing cash
and cash equivalents, the net proceeds from this offering and any cash generated
from operations will be sufficient to fund its operating activities, capital
expenditures and other obligations through at least the next three years.
However, if during that period or thereafter the Company is not successful in
generating sufficient cash flow from operations or in raising additional capital
when required in sufficient amounts and on terms acceptable to the Company,
these failures could have a material adverse effect on the Company's business,
results of operations and financial condition. If additional funds are raised
through the issuance of equity securities, the percentage ownership of its
then-current stockholders would be diluted.
 
                                       27
<PAGE>
RECENT ACCOUNTING PRONOUNCEMENTS
 
    In March 1998, the American Institute of Certified Public Accountants issued
Statement of Position 98-1, Accounting for Costs of Computer Software developed
or obtained for internal use. This Statement is effective for fiscal years
beginning after December 15, 1998. This Statement provides guidance on
accounting for the cost of computer software developed or obtained for internal
use. The Company will adopt this Statement beginning January 1, 1999 and
currently is in the process of evaluating its impact.
 
CERTAIN TAX MATTERS
 
    NET OPERATING LOSS CARRYFORWARDS
 
    Through July 31, 1998, priceline.com operated as a limited liability
company, and income taxes (benefits) accrued to its members. During the nine
months ended September 30, 1998, the Company had a net loss, and since
converting from a limited liability company to a corporation in July 1998, it
has incurred a tax net operating loss of $8.2 million. The Company's initial
corporate tax return will be for the period August 1 through December 31, 1998.
The Company has provided a full valuation allowance on the deferred tax asset of
$3.4 million resulting from the tax net operating loss because of the
uncertainty regarding its realization. The Company's accounting for deferred
taxes under Statement of Financial Accounting Standards No. 109 involves the
evaluation of a number of factors concerning the realizability of the Company's
deferred tax assets. In concluding that a full valuation allowance was required,
management primarily considered such factors as the Company's history of losses
from operations and expected future losses. See Notes 2 and 8 of Notes to
Combined Financial Statements included elsewhere in this Prospectus.
 
    FEDERAL AIR TRANSPORTATION TAX ON AIRLINE TICKET SALES
 
    Currently, a federal air transportation tax is imposed upon the sale of
airline tickets and generally is collected by the airlines selling the tickets.
The tax is based upon a percentage of the cost of transportation, which was 9%
for periods prior to October 1, 1998 and 8% thereafter. Because of the unique
pricing structures employed in the priceline.com service (I.E., the amount paid
by the customer for a ticket being different than the amount charged by the
airline for the same ticket with the excess payment, if any, going to the
Company as a charge for the use of our proprietary business method), it is not
clear how this federal tax should be calculated when sales occur using the
priceline.com service. The Company has been calculating this tax based on the
price charged by the airline for a ticket, rather than the price paid by the
customer. There is a possibility that current law requires computation of the
tax based on the price paid by the customer to the Company. Due to the
uncertainty of how the federal air transportation tax applies to sales of
airline tickets using the priceline.com service, the Company has submitted a
written request to the United States Internal Revenue Service seeking a
determination of the Company's federal air transportation tax obligations. Such
determination may not be favorable and may require the Company to collect
federal air transportation tax on the total amount paid by consumers for air
travel.
 
    The Company potentially owes approximately $56,000 in additional taxes
relating to the method used by the Company to calculate the tax. The Company has
accrued for such potential liability in the Company's combined balance sheet as
of September 30, 1998 and is providing for such potential liability on an
ongoing basis. The Company has agreed to indemnify and hold harmless certain of
our participating airlines from any liability with respect to such taxes as well
as to secure the payment of such taxes by a letter of credit.
 
    NON-QUALIFIED STOCK OPTIONS
 
    The Company currently has outstanding 17,419,375 non-qualified stock options
issued to various employees pursuant to the 1997 Omnibus Plan. Each option
entitles its holder to purchase a share of Common Stock at a weighted average
exercise price of $1.07 per share, subject to adjustment in accordance with the
1997 Omnibus Plan. On exercise of an option, the Company will be entitled to an
income tax deduction equal to the difference between the exercise price of the
option and the then fair market value of the Common Stock. As the exercise of
options is in the sole discretion of the holder of the options, the timing of
the corresponding income tax deduction is outside the control of the Company.
 
                                       28
<PAGE>
YEAR 2000 READINESS DISCLOSURE
 
THE COMPANY'S STATE OF READINESS
 
    The Company has defined Year 2000 compliance as follows:
 
    Information technology time and date data processes, including, but not
limited to, calculating, comparing and sequencing data from, into and between
the 20th and 21st centuries contained in our products and services offered
through the priceline.com service, will function accurately, continuously and
without degradation in performance and without requiring intervention or
modification in any manner that will or could adversely affect the performance
of such products or the delivery of such services as applicable at any time
hereafter.
 
    The Company's internal systems include both its information technology
systems ("IT Systems") and non-information technology systems ("Non-IT
Systems"). The Company has initiated an assessment of its proprietary IT
Systems, and expects to complete any remediation and testing of all IT Systems
during 1999. With respect to IT Systems provided by third-party vendors, the
Company has sought assurances from such vendors that their technology is Year
2000 compliant. All of the Company's material IT System vendors have replied to
inquiry letters sent by the Company stating that they either are Year 2000
compliant or expect to be so in a timely manner.
 
    The Company is evaluating its Non-IT Systems for Year 2000 compliance. It
has not, to date, discovered any material Year 2000 issues with respect to its
Non-IT Systems.
 
    The Company is in the process of contacting its material seller participants
whose products or services are sold through the priceline.com service to
determine if they are Year 2000 compliant. To date, all such seller participants
have stated that they are, or expect to be, Year 2000 compliant in a timely
manner.
 
    The Company's customers are individual Internet users, and, therefore, the
Company does not have any individual customers who are material to an evaluation
of Year 2000 compliance issues.
 
THE COSTS TO ADDRESS YEAR 2000 ISSUES
 
    The Company has expensed amounts incurred in connection with Year 2000
compliance since its formation through September 30, 1998. Such amounts have not
been material. The additional costs to make any other products or services Year
2000 compliant by mid-1999 will be expensed as incurred, but are not expected to
be material.
 
    The Company is not currently aware of any material operational issues or
costs associated with preparing its systems for the Year 2000. Nonetheless, the
Company may experience material unexpected costs caused by undetected errors or
defects in the technology used in its systems or because of the failure of a
material seller participant to be Year 2000 compliant.
 
RISKS ASSOCIATED WITH YEAR 2000 ISSUES
 
    Notwithstanding the Company's Year 2000 compliance efforts, the failure of a
material system or vendor, including a seller participant in the priceline.com
service, or the Internet generally, to be Year 2000 compliant could harm the
operation of the priceline.com service or prevent certain products and services
being offered through the priceline.com service, or have other unforeseen,
adverse consequences to the Company.
 
    Finally, the Company also is subject to external Year 2000-related failures
or disruptions that might generally affect industry and commerce, such as
utility or transportation company Year 2000 compliance failures and related
service interruptions. All of these factors could have a material adverse effect
on our business, financial condition and results of operations.
 
CONTINGENCY PLANS
 
    The Company has not yet developed a contingency plan to address situations
that may result if the Company is unable to achieve Year 2000 compliance. The
cost of developing and implementing such a plan, if necessary, could be
material.
 
                                       29
<PAGE>
                                    BUSINESS
 
OVERVIEW
 
    Priceline.com has pioneered a unique new type of e-commerce known as a
"demand collection system" that enables consumers to use the Internet to save
money on a wide range of products and services while enabling sellers to
generate incremental revenue. Using a simple and compelling consumer
proposition--"name your price," priceline.com collects consumer demand (in the
form of individual customer offers guaranteed by a credit card) for a particular
product or service at a price set by the customer and communicates that demand
directly to participating sellers or to their private databases. Consumers agree
to hold their offers open for a specified period of time to enable priceline.com
to fulfill their offers from inventory provided by participating sellers. Once
fulfilled, offers generally cannot be canceled. Priceline.com benefits consumers
by enabling them to save money, while at the same time benefitting sellers by
providing them with an effective revenue management tool capable of identifying
and capturing incremental revenues. By requiring consumers to be flexible with
respect to brands, sellers and product features, priceline.com enables sellers
to generate incremental revenue without disrupting their existing distribution
channels or retail pricing structures.
 
    Priceline.com commenced its service on April 6, 1998 with the sale of
leisure airline tickets and, during the period from launch through September 30,
1998, collected guaranteed offers for approximately 1.1 million airline tickets,
representing approximately $243.9 million in total consumer demand, resulting in
sales of approximately 67,275 airline tickets, representing approximately $15.5
million in revenue. Priceline.com's services were expanded to include the sale
of new automobiles, on a test basis, in July 1998 and hotel room reservations in
October 1998. During the first quarter of 1999, the Company expects to offer
consumers the ability to obtain home mortgages from a third party mortgage
lender by using the priceline.com service. The Company also intends to expand
its product offerings over the next two years to include rental cars, cruises,
time shares, vacation packages, insurance and other financial services and
certain retail products. Through the innovative use of "adaptive marketing
programs," priceline.com also markets customer acquisition programs for third
parties, which facilitate the completion of a higher percentage of successful
transactions through the priceline.com service and generate significant fee
income for the Company.
 
    The Company offers products and services that are provided by participating
sellers, many of whom are leaders in their industries. Sixteen domestic and
international airlines currently participate in priceline.com's leisure airline
ticket service, including Delta, TWA, America West, and leading international
carriers. Participants in our hotel reservation service include Marriott,
Sheraton, Westin and several other nationally recognized hotel chains. The
Company does not publicly advertise the names of its seller participants in its
airline and hotel programs. Priceline.com's mortgage service, which will be
offered through a joint marketing arrangement with LendingTree, an
Internet-based mortgage service provider, is expected to include a network of 17
mortgage lending institutions.
 
    Management believes that the priceline.com service already has achieved
significant consumer acceptance and widespread brand awareness. An independent
research study conducted for the Company by the Opinion Research Corporation of
Princeton, New Jersey ("ORC"), as of September 1998, found that, among adult
Americans, the priceline.com "name your price" business proposition was the
second most recognized e-commerce brand among the 13 leading brands included in
the survey and one of the six most recognized Internet brands among the 25
leading brands included in the survey. ORC further found that, after only five
months of operation, 62.5 million (or 32%) of all adult Americans were aware of
the priceline.com "name your price" proposition. The Company's strong brand
awareness has been achieved without any affiliation with an Internet portal
company such as Yahoo! or Excite or a proprietary online service such as America
Online. Beyond mere name recognition, the Company also believes that it enjoys
high levels of consumer satisfaction among users of its service who provide
powerful word-of-mouth endorsements. In addition, priceline.com has been
featured in hundreds of news stories in national
 
                                       30
<PAGE>
publications such as THE NEW YORK TIMES, THE WALL STREET JOURNAL and USA TODAY.
The priceline.com service also has been awarded a four-star rating by YAHOO!
INTERNET LIFE magazine as the "most creative way to get a good deal" on leisure
airline tickets.
 
    The Company believes that priceline.com's unique business model can be
applied to a broad range of products and services. Priceline.com's business
model is covered by a patent and the Company currently has a number of
additional patent applications pending. The Company believes that the broad
applicability of its business model, its patent strategy, its first mover
advantage, the strength of the priceline.com brand, its network of seller
participants and its proprietary software systems provide the Company with
significant competitive advantages.
 
INDUSTRY BACKGROUND
 
    THE GROWTH OF COMMERCE ON THE INTERNET
 
    The Internet has emerged as a significant interactive medium for conducting
business. International Data Corporation ("IDC"), a market research firm,
estimates that the number of Internet users worldwide will exceed 97 million in
1998 and will grow to over 319 million by the end of 2002. IDC also estimates
that annual worldwide commerce over the Internet will increase from
approximately $32 billion in 1998 to approximately $425 billion by 2002. The
factors driving this growth include the increasing number of personal computers
in homes and offices, the decreasing cost of personal computers, technological
innovations providing easier, faster and cheaper access to the Internet, the
proliferation of content and services being provided on the Internet and the
increasing use of the Internet by businesses and consumers as a medium for
conducting business. The increasing use of the Internet as a commercial medium
has been accompanied by a diversification in the type of commerce that is
conducted on the Internet and a proliferation in the types of products and
services available on the Internet.
 
    The Internet possesses a number of unique and commercially powerful
characteristics that differentiate it from traditional media: users communicate
or access information without geographic or temporal limitations; users access
dynamic and interactive content on a real-time basis; and users communicate and
interact instantaneously with a single individual or a group of individuals at
little or no cost. The Internet has created a dynamic and particularly
attractive medium for commerce, empowering consumers to gather more comparative
purchasing data than is feasible with traditional commerce systems, to shop in
ways that can be more convenient for them and to interact with sellers in many
new ways. As the Internet has become more accessible and widely used for
transactions, it has emerged as a primary business channel alongside the
telephone, paper-based communication and face-to-face interaction.
 
    LIMITATIONS OF TRADITIONAL PRICING MECHANISMS
 
    Under traditional retail pricing methods, sellers typically market products
to consumers under brand names at fixed retail prices. Alternatively, prices can
be established through auction processes. However, each of these forms of
seller-driven commerce have certain significant disadvantages for both sellers
and consumers. For example, in the retail pricing model, sellers who discount
prices to clear excess inventory, utilize excess capacity or increase sales
velocity, risk disruption of their existing distribution channels and damage to
their retail pricing structures. They also lose the opportunity to earn
incremental revenue from "free-riders" (I.E., consumers who would have been
prepared to pay the undiscounted price for the product or service, but
nevertheless obtain the benefit of the discounted price). Moreover, none of
these pricing methods allow sellers to consider the flexibility of potential
buyers before setting prices. Similarly, consumers are often forced to pay a
higher price when the seller is setting a fixed retail price for a product with
added features or under a specific brand, which the customer would otherwise
have been prepared to forgo for a lower price. Auctions force consumers to
compete against each other for the benefit of the seller, which always results
in the product being sold on the basis of the highest bid.
 
                                       31
<PAGE>
    While the Internet has become a significant medium for conducting business,
commerce presently conducted on the Internet is largely based upon traditional
pricing methods. The Company believes that the vast information sharing and
communications power of the Internet creates an opportunity for significant
change in the way commerce or business is conducted.
 
THE PRICELINE.COM SOLUTION
 
    Priceline.com has developed a demand collection system that uses the
information sharing and communications power of the Internet to create a new way
of pricing products and services. Priceline.com creates a new balance between
the interests of buyers, who are willing to accept trade-offs in order to save
money, and sellers, who are prepared to generate incremental revenue by selling
products at below retail prices, provided that they can do so without disrupting
their existing distribution channels or retail pricing structures.
Priceline.com's demand collection system allows consumers to name the price they
are prepared to pay for a particular product or service within a specified range
of substitutability and then communicates such offers to multiple sellers or
their private databases. Consumers agree to hold their offers open for a
specified period of time to enable priceline.com to fulfill their offers from
inventory provided by participating sellers. Once fulfilled, offers generally
cannot be canceled. This system uses the flexibility of buyers to enable sellers
to accept a lower price in order to sell excess inventory or capacity or to
increase sales velocity. Priceline.com believes that its demand collection
system addresses the limitations inherent in traditional pricing mechanisms in a
manner that offers substantial benefits to both buyers and sellers.
 
    The principal advantages of the priceline.com system include the following:
 
    - COST SAVINGS AND PREFERRED METHOD OF PURCHASING FOR CONSUMERS.
      Priceline.com's demand collection system allows consumers to save money in
      a simple and compelling way--"name your price." Buyers effectively trade
      off flexibility about brands, product features and/or sellers in return
      for prices that are lower than those that can be obtained at that time
      through traditional retail distribution channels. The Company believes
      that in many cases, such as purchasing a new car or obtaining a home
      mortgage, naming your own price over the Internet represents a preferred
      purchasing method to traditional retail channels, which may involve
      comparison shopping among a complex array of alternative features,
      sometimes protracted negotiations and dealings with numerous brokers or
      sales representatives. Naming your price over the Internet also is a
      preferred purchasing method to auctions which always result in the product
      being sold on the basis of the highest bid.
 
    - INCREMENTAL REVENUE FOR SELLERS. Sellers use priceline.com as a revenue
      management tool to generate incremental revenue without disrupting their
      existing distribution channels or retail pricing structures. Priceline.com
      requires consumers to be flexible with respect to brands (E.G., a
      willingness to fly on any major airline) and/or product features (E.G., a
      willingness to fly at any time of the day) and/or seller (E.G., any BMW
      dealer in a specific geographic area). As a result, sellers' brands are
      not revealed to customers prior to the consummation of a transaction,
      thereby protecting their brand integrity. This shielding of brand identity
      enables sellers to accept offers at discounted prices through
      priceline.com without cannibalizing their own retail sales by publicly
      announcing discount prices and without competing against their own
      distributors. In effect, priceline.com serves as a discreet and insulated
      channel of distribution. Sellers are further protected by the fact that
      each transaction is independent and the prices at which offers are
      accepted are not revealed to subsequent users of the priceline.com
      service. Priceline.com gives sellers the ability to exercise a greater
      degree of pricing flexibility without trading high-margin sales for
      low-margin sales, thereby enabling sellers to expand their total revenues
      and, in some cases, gain market share at the expense of non-participating
      competitors.
 
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    - PROPRIETARY SELLER NETWORKS. Priceline.com assembles proprietary networks
      of industry leading sellers that represent high quality brands, such as
      Delta, America West, TWA, Marriott, Sheraton and Westin. By establishing
      attractive networks of seller participants with reputations for quality,
      scale and national presence, priceline.com fosters increased participation
      by both buyers and sellers. Each participant in these unique seller
      networks is willing to consider and accept consumer offers at prices that
      are below its retail prices. Moreover, by shielding the seller's brand and
      not revealing the final selling price to other consumers, priceline.com
      encourages participating sellers to be aggressive in their pricing. The
      Company believes that as more and more sellers in an industry join the
      priceline.com service, other industry participants will want to join the
      system in order to maintain market share and avoid competitive
      disadvantage.
 
    - GUARANTEED CONSUMER DEMAND FOR SELLERS. Each customer who makes an offer
      through priceline.com must guarantee his offer with a major credit card.
      The guaranteed aspect of the demand is attractive to sellers because they
      know that priceline.com offers them a confirmed sale whenever they accept
      a buyer's offer. Sellers can be sure that collected demand represents
      willing buyers, at each named price, rather than browsing shoppers who
      have made no commitment to purchase. Priceline.com's database of consumer
      offers also provides sellers with valuable market information about the
      precise quantities of latent demand at each price point below their retail
      prices.
 
    - BROAD APPLICATIONS ACROSS MULTIPLE MARKETS. In contrast to many e-commerce
      companies that are building brands in vertical categories or groups of
      related categories, priceline.com believes that its e-commerce business
      model has horizontal application to products and services in a wide range
      of industries. The Company further believes that the broad applicability
      of the priceline.com service and the strength of the priceline.com brand
      afford the Company the opportunity to obtain substantial economies of
      scale and offer the potential for priceline.com to become a major new
      channel of distribution. The breadth of potential applications of the
      priceline.com business model also is enhanced by various cross-selling
      opportunities, since the Company expects that customers who successfully
      complete transactions through priceline.com will return to priceline.com
      to purchase other products and services.
 
    - PATENTED BUSINESS SYSTEM. The Company believes that the strength of its
      business is enhanced by a patent portfolio covering its business model and
      a number of potentially competitive business models. Priceline.com's
      buyer-driven commerce system is covered by an issued patent and the
      Company has another issued patent and a number of related patent
      applications are pending. The Company believes that its patent strategy
      enhances the Company's competitive position.
 
THE PRICELINE.COM GROWTH STRATEGY
 
    The Company's objective is to continue to expand the priceline.com business
and to establish priceline.com's demand collection system as a leading source
for the purchase of products and services on the Internet. The key elements of
the Company's strategy are as follows:
 
    - STRENGTHEN THE PRICELINE.COM BRAND. The Company intends to establish
      priceline.com as the leading consumer brand for buyer-driven commerce over
      the Internet. To achieve this objective, the Company intends to continue
      to pursue an aggressive brand development strategy through mass market and
      targeted advertising and promotions, press coverage and strong
      word-of-mouth support. While priceline.com is already one of the most
      recognized e-commerce brands among adult Americans, the Company believes
      that it can expand the public's association with the priceline.com "name
      your price" proposition to a broad range of products and services.
 
    - LEVERAGE THE PRICELINE.COM BRAND OVER NUMEROUS PRODUCTS AND SERVICES. The
      Company intends to leverage the priceline.com brand across numerous
      products and services to achieve significant revenue scale and growth. In
      contrast to most e-commerce businesses that operate in one or two
      "vertical" markets, priceline.com is a "horizontal" commerce system that
      can benefit both buyers
 
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      and sellers in a broad range of industries. The Company's strategy is to
      make available multiple product and service offerings at a single Web site
      under a common brand to take advantage of these market opportunities. Over
      the next two years, the Company intends to offer products and services in
      four sectors of the economy where its demand collection system is
      particularly well suited. These sectors are (i) travel, including leisure
      airline tickets and hotel rooms (which are currently offered), rental
      cars, "all-inclusives" resorts, cruises and time shares; (ii) financial
      services, including home mortgages, credit card balance consolidation and
      automobile and life insurance; (iii) automobile sales (currently offered)
      and related financing; and (iv) retail products, including computers, home
      electronics and other consumer products. Given the size and scope of these
      markets, the Company believes it can achieve a large revenue base and
      sustain revenue growth by capturing even a small portion of the excess
      unsold inventory or capacity in these sectors and by capturing even
      relatively small amounts of market share from traditional seller-driven
      channels of retail distribution.
 
    - EXPAND SELLER PARTICIPANT NETWORKS. The Company intends to continue to
      expand its alliances with major seller participants selected for
      reputation, quality and national presence to create proprietary seller
      networks for each of its major products and services. A critical element
      in the success of the priceline.com business has been the Company's
      ability to demonstrate to its seller participants that priceline.com can
      generate incremental revenues for sellers without disrupting their
      existing distribution channels or retail pricing structures. Priceline.com
      intends to form and maintain alliances with industry leaders by designing
      its products and services in a way that requires consumers to accept some
      trade-offs from currently available retail product offerings in return for
      lower prices. Such trade-offs typically include not knowing the identity
      of the seller or brand prior to the acceptance of a customer's offer by a
      seller.
 
    - ENHANCE SITE FUNCTIONALITY AND INCREASE CONSUMER USAGE. Priceline.com
      intends to frequently update and enhance the features of the priceline.com
      service in order to continue to improve the priceline.com service. The
      Company monitors feedback from consumers and adds new features to further
      refine and simplify the buying process. Priceline.com also receives offers
      and provides customer service by telephone to assist consumers in the
      offer process. By continuing to increase the functionality of the service
      and enhance the consumer experience, priceline.com believes that it will
      continue to increase customer usage and loyalty.
 
    - EXPAND ADAPTIVE MARKETING PROGRAMS. The Company intends to further develop
      and expand what it refers to as "adaptive marketing programs." Adaptive
      marketing programs include two distinct initiatives. "Adaptive promotions"
      allow consumers to increase the amount of their offers (and thus their
      likelihood of success) at no additional cost by participating in sponsor
      promotions during the process of making a priceline.com offer. For
      example, a customer making an offer to buy an airline ticket can increase
      the amount of his offer by a stated amount by applying online for a credit
      card issued by one of the Company's strategic partners. These promotions
      have the effect of increasing the percentage of successful offers at no
      additional cost to the consumer, while at the same time enabling the
      Company to earn significant fee income, which it can use to offset the
      sale of products and services below its unit cost. The second type of
      adaptive marketing program is referred to as "adaptive cross selling" and
      utilizes cross selling of multiple products to increase the number of
      successful transactions. While it is inherent in the nature of
      priceline.com's business model that not all offers will be acceptable to
      sellers, an integral part of the Company's strategy is to ensure that a
      high percentage of reasonable offers get accepted, thereby increasing
      financial returns while reinforcing the priceline.com brand. As customers
      have become more familiar with the service, the Company has been able to
      increase the percentage of offers it satisfies and expects this trend to
      continue.
 
    - INCREASE FINANCIAL RETURNS OVER TIME. The Company intends to increase its
      financial returns over time as its revenue base grows. The Company's
      demand collection system enables it to balance revenue growth against
      gross profit margins, thereby enhancing the Company's ability to manage a
 
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<PAGE>
      targeted gross margin as a percentage of revenues. The Company initially
      intends to emphasize revenue growth over profit margins in order to
      achieve significant revenue scale and to further strengthen the
      priceline.com brand. However, over time, as the Company's revenue base
      increases, the Company believes it will be able to capture a greater
      portion of the incremental profit that it generates for participating
      sellers and thereby increase the Company's profit margins and financial
      returns.
 
    - EXPLORE INTERNATIONAL EXPANSION. The Company believes that the
      international scope of the Internet and the global demand for the types of
      products and services that the Company intends to make available through
      priceline.com presents opportunities to expand its service
      internationally. Given the anticipated continued increase in use of the
      Internet throughout the world, the Company intends to explore avenues and
      strategies for international expansion. The Company believes that joint
      ventures and licensing arrangements with international partners are likely
      to be the preferred methods of international expansion, as they will
      enable the Company to combine its expertise in demand collection systems
      with its partners' expertise in their local markets.
 
THE PRICELINE.COM BUSINESS MODEL
 
    The Company believes that its demand collection system is a powerful new
business model for conducting commerce on the Internet. The priceline.com
business model is designed to allow consumers to save money on a wide range of
products and services by trading flexibility regarding brands, product features
and/or sellers in return for being able to buy products and services at prices
that are lower than those charged through traditional retail channels of
distribution. The priceline.com business model motivates sellers to offer
products through priceline.com at below their retail prices by enabling them to
generate incremental revenue while protecting their existing channels of
distribution and retail pricing structures.
 
    The defining elements of the priceline.com business model are the following:
 
    - the buyer specifies or accepts a RANGE OF SUBSTITUTABILITY among brands,
      product features and/or sellers (E.G., agrees to stay at any three-star
      hotel in a certain area, agrees to fly at any time of the day or agrees to
      purchase a new car from any factory-authorized dealer);
 
    - the buyer NAMES THE PRICE he is prepared to pay for the products or
      services within the specified range of substitutability;
 
    - the buyer GUARANTEES HIS OFFER for a specified time period by securing all
      or a portion of his potential payment for the product or service with a
      major credit card;
 
    - companies sell products or services at prices below their currently
      available retail prices using priceline.com as a BRAND SHIELD to protect
      their retail pricing structures and channels of distribution;
 
    - each guaranteed offer can be consummated by any of a group of SELLERS; and
 
    - offers made through priceline.com are held open for sellers to accept for
      a specified period of time, and generally CANNOT BE CANCELED by either the
      seller or the buyer.
 
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<PAGE>
    The priceline.com consumer proposition is simple and compelling: realize
immediate savings by using the Internet to name your own price when you are
willing to be flexible about brands, product features and/or sellers. A central
premise of the priceline.com consumer proposition is that in many product and
service categories there are a significant number of consumers for whom brands,
product features or sellers are interchangeable, particularly if agreeing to a
substitution among brands or sellers will result in saving money. For example,
the Company believes that many leisure travelers are relatively indifferent
about the brand of major airline they fly. Similarly many consumers are
indifferent to which financial services company provides them with a credit card
or home mortgage. The Company also believes that many consumers prefer not to
spend time and effort engaged in an evaluative process among similar products,
brands or sellers, which they consider to be substitutable. Finally,
priceline.com is appealing to some consumers because it does not charge a
customer for simply submitting an offer, and the Company's Web site provides
convenient access, available 24 hours a day, seven days a week.
 
    The Company believes that the collection of large volumes of consumer demand
is essential to building a network of multiple sellers to consider accepting
consumers' offers. The Company also believes that it is important that all of
the demand it collects is GUARANTEED by the buyer, that offers must be held open
for a specified time period and that once an offer is accepted it generally
cannot be canceled or the purchase price refunded. This approach assures sellers
that the customers' offers are bona fide and that once an offer is accepted, the
seller will generate an immediate sale, rather than an invitation to further
negotiation or comparison shopping.
 
    The priceline.com business model is predicated on the assumption that
sellers almost invariably have excess inventory or capacity that they would sell
at lower prices, if they could do so without either lowering their prices to
their retail customers or advertising that lower prices are available.
Priceline.com allows sellers to capture demand BELOW their retail "price line,"
without allowing retail customers who might be willing to pay more to "free
ride" down to the lower price. The ability to offer prices below the retail
price line generates incremental revenue by accessing buyer segments otherwise
priced out of the market and, in certain cases, by capturing market share from
nonparticipating competitors. Finally, priceline.com's database of consumer
offers benefits sellers by providing them with valuable market information about
the precise quantities of latent demand at each price point below their retail
prices.
 
    The Company believes that its demand collection system is ideally suited to
industries characterized by low variable costs relative to total cost (I.E.,
high profit contribution margins), which provides sellers with a strong
incentive to sell products at prices below their retail prices to generate
incremental sales, provided that they can do so without threatening their
existing distribution channels or retail pricing structures. Low variable costs
frequently exist in industries with expiring or rapidly aging inventory. The
Company also believes, however, that its demand collection system will prove to
be effective even in industries that are not characterized by rapidly aging
inventories and low variable costs because a significant number of consumers
will prefer the relative cost savings, ease of use and convenience of
priceline.com's name your price system to traditional retail distribution
channels, and sellers will be attracted to the potential of the priceline.com
service to increase sales velocity, which is often a significant factor in the
success of businesses in these industries.
 
    The Company believes that markets characterized by a large degree of brand,
product feature or seller substitutability are substantial and include both
those in industries characterized by high profit contribution margins and
industries in which many consumers are dissatisfied with traditional retail
distribution methods. In the business-to-consumer market, travel, new car sales,
financial services and many retail products offer substantial ranges of
substitutability in consumers' minds. In the business-to-business market, long
distance service, media sales and office supplies are subject to high degrees of
product or brand substitutability. In the consumer-to-consumer market, there are
often multiple sellers that are ready, willing and able to offer new or nearly
new products that consumers consider substitutable. The Company believes that
its business model can be applied to each of these markets, thereby providing
the Company with considerable potential for long term growth.
 
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<PAGE>
PRODUCTS AND SERVICES
 
    The Company launched the priceline.com service on April 6, 1998 with the
sale of leisure airline tickets. Since that time, the priceline.com service has
been expanded to include the sale of new automobiles on a test basis in July
1998 and hotel room reservations in October 1998. During the first quarter of
1999, the Company expects to offer consumers the ability to obtain home
mortgages from a third party mortgage lender by using the priceline.com service.
The Company also intends to expand its product offerings over the next two years
to include other leisure travel products such as rental cars, cruises, time
shares, and vacation packages; automobile and personal insurance and other
financial services products; and certain retail products such as computers, home
electronics and other consumer products.
 
    TRAVEL SERVICES
 
    LEISURE AIRLINE TICKETS.  Priceline.com commenced its service with the sale
of leisure airline tickets. The number of airlines participating in
priceline.com's airline ticket service has increased substantially since the
launch of the business, from an initial group of two domestic airlines and four
international airlines, to a total of four domestic airlines and 12
international airlines. Priceline.com also purchases and resells a small
percentage of its tickets from airline ticket consolidators. Airlines
participate in priceline.com's airline ticket service by making available to the
Company unpublished fares and, in some cases, dedicated or special inventory.
Priceline.com does not publicly advertise the names of airlines participating in
its airline ticket service.
 
    Consumers can make offers to purchase airline tickets through the
priceline.com Web site or the 1-800-Priceline call center. During the period
from launch through September 30, 1998, approximately 85% of all airline ticket
requests were made through the Company's Web site. To make an offer, the
customer (i) specifies (a) the origin and destination of the trip, (b) the dates
on which he wishes to depart and return, and (c) the price he is willing to pay;
and (ii) guarantees the offer with a credit card. Consumers must agree to, among
others, the following conditions: (i) to fly on any major full-service airline
(as defined by the United States Department of Transportation); (ii) to leave at
any time of the day on their desired dates of departure and return; (iii) to
purchase only round trip economy class tickets between the same two points of
departure and return; (iv) to accept up to one stop or connection; (v) to
receive no frequent flier miles or upgrades; and (vi) to accept tickets that
cannot be refunded or changed. Consumers are informed that they can increase
their chances of obtaining the desired ticket by accepting greater flexibility,
such as accepting flights outside of priceline.com's normal flight times or
accepting more than one stop or connection. Consumers also are given the
opportunity to have their offers increased by a specified dollar amount (and
thereby increase the likelihood of success) if they agree to participate in an
adaptive promotion during the process of submitting their offers, such as
applying for a credit card or subscribing to a magazine. In order to encourage
reasonable initial offers, consumers are not permitted to make revised offers
for an identical itinerary within seven days of an unsuccessful offer.
 
    When the Company receives an offer, it determines whether the offer can be
fulfilled under the available fares, rules and inventory that have been provided
by participating airlines. Such fares and rules are filed by participating
airlines in a private database known as SecureRate within the Worldspan central
reservation system. As a certified travel agency, the Company also has access to
the published "tariff" fares of all airlines, including those not participating
in the priceline.com program, although the Company currently does not sell
tickets purchased pursuant to published tariff fares. If a qualifying airfare is
identified, a search in Worldspan is initiated to find seat availability on the
requested dates of travel. Where more than one seller is able to fulfill the
customer's offer, priceline.com awards the business based on an allocation
protocol.
 
    A customer is notified whether his offer has been accepted within one hour
for domestic flights and within twenty-four hours for international flights. If
priceline.com is able to obtain an airline ticket within the parameters
specified by the customer, the customer's credit card is charged for the amount
of the customer's offer and the ticket is delivered to the customer by the
delivery method specified by the
 
                                       37
<PAGE>
customer. Approximately 90% of the tickets issued through priceline.com are
electronic tickets for which there is no delivery charge. Priceline.com does not
charge a fee to either the customer or the airline, but earns the spread, if
any, between the customer's offered price and the cost to purchase the ticket
from the airline.
 
    HOTELS.  In October 1998, the Company launched its second travel service,
which allows consumers to name their price for hotel room reservations. At the
time of launch, priceline.com's hotel reservation service was available in 26
metropolitan areas including Atlanta, Boston, Chicago, Los Angeles, New York,
Orlando and San Francisco. The Company intends to expand its hotel reservation
service during 1999 to include substantially all major metropolitan areas in the
United States and various international destinations. Seller participants in the
hotel reservation service include several of the most significant national hotel
chains, including Marriott, Sheraton and Westin, as well as several important
real estate investment trusts and independent property owners. Hotels
participate by filing private discounted rates with related inventory control
rules in the Company's private database in the Worldspan centralized reservation
system for hotel rooms. These rates generally are not available to the general
public or to consolidators and other discount distributors who sell to the
public.
 
    Priceline.com's hotel reservation service operates in a manner similar to
its airline ticket service. Consumers are required to accept certain trade-offs
with respect to brands or product features in return for saving money. For
example, consumers are required to accept a reservation in any hotel within a
specified geographic area within a designated "class" of service (E.G., 2, 3, 4
or 5-star) and must accept limitations on changes and cancellations. The Company
determines the class of service for each participating hotel based upon
published industry reports, the amenities available at each property and other
factors such as age and decor. As with the airline ticket service, the target
market for the Company's hotel reservation service is the leisure travel market.
 
    Consumers can make offers for a hotel reservation through the priceline.com
Web site or 1-800-Priceline call center. To make an offer, the customer (i)
specifies (a) his dates of stay, (b) the metropolitan area (including geographic
zones within that metropolitan area), (c) the class of hotel service and (d) the
price he is willing to pay; and (ii) guarantees the offer with a credit card.
Upon receipt of an offer for a hotel reservation, priceline.com systematically
compares the offer with rates and inventory rules and determines whether the
offer can be fulfilled from available inventory. The customer is notified
whether his offer has been accepted within a specified time (currently one
hour). When selling a hotel reservation, the Company earns the spread between
the consumer's offer price and the price charged to the Company by the hotel.
The Company also earns fee income from adaptive promotions that it makes
available to consumers during the course of submitting an offer for a hotel
reservation.
 
    The dynamics of the hotel industry are similar to those of the airline
industry in that both industries are characterized by expiring inventory and low
marginal costs so that the sale of any excess inventory provides a significant
contribution to profits. As with the airline industry, a significant amount of
available inventory in the hotel industry expires unsold. The Company also
believes that consumers are willing to trade off brand identity for lower rates
with a specified class of hotel reservation service and that such industry
dynamics make priceline.com's demand collection system particularly well-suited
to the hotel industry. The Company also believes that the hotel reservation
service will create opportunities for cross-selling to leisure travelers who
purchase airline tickets through priceline.com.
 
    OTHER TRAVEL SERVICES.  The Company intends to expand its products and
services within the leisure travel industry over the next two years to encompass
the rental car, cruise, all-inclusive resort, time share and vacation package
segments.
 
    FINANCIAL SERVICES PRODUCTS
 
    HOME MORTGAGES.  The Company expects to introduce its home mortgage service
in the first quarter of 1999. Priceline.com's mortgage service will allow
consumers to name their interest rate for mortgages of a specified term,
including purchase money mortgages, refinancings and home equity loans.
LendingTree,
 
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<PAGE>
an Internet based mortgage service provider, will be the Company's joint
marketing partner in connection with its mortgage service. Under the Company's
agreement with LendingTree, priceline.com will be responsible for maintaining
the mortgage service on the priceline.com Web site and for consumer marketing.
LendingTree will serve as the mortgage broker and will operate the back-end
processing system, which will present offers received through priceline.com to
multiple mortgage lending institutions for consideration. LendingTree maintains
its own online mortgage service, which is expected to include a network of 17
mortgage lending institutions. See "-- Strategic Alliances -- Marketing
Agreement for Mortgage Services".
 
    To obtain a home mortgage through the priceline.com service, consumers will
access the priceline.com Web site and specify the amount of the loan, the term
and the interest rate they are willing to pay. Consumers will complete a
simplified loan application as part of the process of making an offer. In
connection with making an offer, consumers will be required to guarantee with a
major credit card the payment of a fee of $200, to be credited against closing
costs if their offer is accepted. Priceline.com will transmit each offer to
LendingTree, which in turn will present the offer to multiple lenders who can
either accept the offered terms, or return a counteroffer to the consumer.
Priceline.com will notify the customer within 48 hours whether his offer has
been accepted. Upon the closing of a mortgage placed through priceline.com's
mortgage service, LendingTree receives a fee from the lending institution, and
the Company receives a fee from LendingTree.
 
    According to published industry data, approximately $1.1 trillion of home
mortgages are entered into in the United States each year. The Company believes
that consumers are largely indifferent to which mortgage issuer provides their
mortgage and seek merely to obtain the lowest cost in the most efficient manner.
Moreover, comparison shopping among the hundreds of mortgage lenders can be a
frustrating experience for consumers. The Company believes the priceline.com
mortgage service will provide consumers with a simple and efficient vehicle for
obtaining the interest rate they seek through a preferable purchasing process.
For lenders, the priceline.com mortgage service will provide guaranteed demand
from consumers who are committed to buy and will submit that demand in a format
that can be reviewed and evaluated by the lender with minimal variable costs.
 
    OTHER FINANCIAL SERVICES PRODUCTS.  The Company intends to expand its
products and services within the financial services industry over the next two
years to include unsecured personal loans, credit card balance consolidations
and automobile and life insurance policies. As with its other products and
services, the Company intends to expand its financial product services by
entering into strategic relationships with leading industry participants. The
Company believes its financial product services will have broad demographic
appeal among consumers who seek to obtain the most attractive economic terms in
the most efficient manner from what they perceive to be substitutable suppliers.
 
    NEW CAR SALES
 
    Priceline.com introduced a new car sales service on a test basis in the New
York metropolitan area in July 1998. Priceline.com is using the New York market
to learn more about the Internet automobile sales market and to develop product
features and systems support. In the first half of 1999, the Company intends to
introduce its new car sales service in a prototype market (presently expected to
be a city with a population of approximately one million). Once the service's
product features have been refined and the Company's performance expectations
have been achieved in this prototype market, the Company expects to implement a
gradual roll-out to additional metropolitan markets in the United States.
Priceline.com's new car sales service currently does not offer automobile
financing. Because a significant majority of new car buyers finance their
purchase, the Company intends to add a financing feature (both leasing and
lending) to its program prior to a broader roll-out of the service, including a
"budget worksheet" that will assist customers in determining what cars they can
afford to purchase.
 
    The Company's new car sales service accepts offers for every major brand of
automobile. To purchase a new car through the priceline.com service, consumers
name the price for a new car with specified model
 
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<PAGE>
options, and agrees to purchase such car from any factory authorized dealer
within a specified geographic radius. To help consumers submit reasonable
requests, both the manufacturer's suggested retail price and the dealer invoice
price for the vehicles and options requested are displayed on the priceline.com
Web site. Upon receiving an offer for a new car, priceline.com transmits the
customer's offer to factory authorized dealers within the specified geographic
radius, without disclosing the identity of the customer. Priceline.com directs
the sale to the first dealer that notifies the Company that it is willing to
accept the customer's offer. Priceline.com then notifies the customer to pick up
the vehicle from that dealer and the transaction is closed directly between
them.
 
    Due to the numerous features and options on a new automobile, the range of
product substitutability that consumers will accept is lower in the case of new
cars than with airline tickets or hotels. As a result, a dealer that may not be
able to precisely fulfill a customer's offer directly is permitted to make a
counteroffer through priceline.com. The counteroffer may specify a different
product package or price. The customer is free to accept or reject such a
counteroffer. The customer also is permitted to submit an additional offer
through priceline.com.
 
    Once an offer for a new car is accepted by a dealer, the consumer completes
the transaction directly with the dealer and receives the same standard
manufacturer's warranty and other terms that are available with respect to any
new car purchaser at that dealer. When a sale is completed, priceline.com is
paid a fee (currently $25) from the customer and an additional fee from the auto
dealer. If the customer fails to consummate the transaction within 14 business
days of being notified that an offer is accepted, the customer is charged a
cancellation fee (currently $200), half of which is payable to priceline.com
with the other half payable to the dealer.
 
    The Company believes that, for many consumers, purchasing an automobile
through priceline.com's new car sales service will be a preferred purchasing
method compared to traditional retail channels which often involve protracted
negotiations with numerous dealers, some of which may utilize aggressive sales
tactics. The Company also believes that many automobile dealers will view the
priceline.com service as an attractive way to generate incremental sales through
a low cost distribution channel.
 
    The priceline.com new car sales service is differentiated from other
Internet car sales services, which serve as lead generators for participating
car dealers. Under such services, multiple dealers may contact the customer in
response to the customer's inquiry to the Internet service. By contrast,
priceline.com's new car sales service does not reveal the identity of the
customer to the auto dealer until the dealer has accepted the customer's offer.
Furthermore, in contrast to other Internet car sales services, dealers are not
required to pay a participation fee to review offers from the priceline.com
service.
 
ADAPTIVE MARKETING PROGRAMS
 
    The Company has developed adaptive marketing programs to help bridge the gap
between consumer offers and seller prices, provide users of the priceline.com
service with other desired products, and generate additional revenue for the
Company. These programs also serve as an integral part of the Company's strategy
of building customer loyalty.
 
    The Company intends to further develop and expand its adaptive marketing
programs, which presently include two distinct initiatives. The first, which the
Company refers to as "adaptive promotions," allows consumers to increase the
amount of their offers (and thus their likelihood of success) at no additional
cost by participating in sponsor promotions during the process of making a
priceline.com offer. For example, a customer making an offer to buy an airline
ticket can immediately increase the amount of his offer by $50 by applying
online for a credit card. If the customer obtains the requested ticket, he still
pays only the amount contained in his original offer. For example, if a customer
makes an offer to purchase a round trip ticket from New York to Chicago for $200
and, in the process of submitting that offer, he applies for a credit card, the
offer would be submitted at $250, but the customer would have to pay only $200
for the ticket.
 
                                       40
<PAGE>
    The second type of adaptive marketing program is referred to as "adaptive
cross selling" and utilizes cross selling of multiple products to increase the
number of successful transactions. For example, a customer whose offer for an
airline ticket was slightly below acceptable levels could be offered a second
related product such as a hotel room reservation or a rental car day at a
combined price that provided an acceptable margin for the sellers of both
products and for the Company.
 
    The Company's principal adaptive promotion offers consumers the ability to
apply for a credit card issued by Capital One while submitting offers through
priceline.com. Pursuant to a letter of intent with Capital One, the Company is
paid a fee by Capital One for each qualifying credit card application. The
Company currently is negotiating a definitive agreement with Capital One. The
Company also offers an adaptive promotion for magazine subscriptions pursuant to
a revenue sharing agreement with NewSub Services, Inc. ("NewSub Services"), a
magazine subscription agent that is an affiliate of the Company's Founder and
Vice Chairman, Mr. Jay S. Walker. Under the agreement with NewSub Services, the
Company shares in a percentage of the revenues generated upon the conversion of
priceline.com generated subscriptions to annual subscriptions after a six month
free trial period.
 
MARKETING AND BRAND AWARENESS
 
    The Company has established priceline.com as a leading e-commerce brand
through an aggressive marketing and promotion campaign. From inception through
September 30, 1998, the Company spent $15.9 million for sales and marketing
expense. The Company intends to continue to pursue an aggressive marketing
strategy designed to promote brand awareness and the concept that consumers can
save money on a wide range of products and services through priceline.com.
Underlying the Company's marketing strategy is the Company's belief that its
target market is all consumers, not just Internet-savvy consumers. Substantially
all of such spending has been for radio and newspaper advertising. The Company's
campaign features the actor William Shatner as the Company's spokesperson.
 
    The Company supplements its paid advertising and promotion with targeted
media coverage. Priceline.com has been featured in hundreds of news stories in
national publications such as THE NEW YORK TIMES, THE WALL STREET JOURNAL and
USA TODAY, reflecting the intuitive appeal of the priceline.com business model
and its strong word-of-mouth support. In addition, the Company engages in grass
roots marketing such as promotional events on college campuses and co-promotions
with popular media such as MTV.
 
    The priceline.com service has achieved wide spread brand awareness. An
independent research study conducted for the Company by the ORC, as of September
1998, found that, among adult Americans, the priceline.com "name your price"
business proposition was the second most recognized e-commerce brand among the
13 leading brands included in the survey and one of the six most recognized
Internet brands among the 25 leading brands included in the survey. ORC further
found that, after only five months of operation, 62.5 million (or 32%) of all
adult Americans were aware of the priceline.com "name your price" proposition.
The Company's strong brand awareness has been achieved without any affiliation
with an Internet portal company such as Yahoo! or Excite or a proprietary online
service such as America Online. The Company also believes that it enjoys high
levels of consumer satisfaction among users of its service who provide a
powerful word-of-mouth endorsements.
 
STRATEGIC ALLIANCES
 
    AIRLINE ALLIANCES AND RELATIONSHIPS
 
    Priceline.com has entered into Airline Participation Agreements with four
domestic and 12 international airlines. The Airline Participation Agreements do
not commit the airlines to provide tickets for any particular routes or at a
discount to their retail prices, but outline the terms and conditions under
which ticket inventory provided by the airlines may be sold. Such terms and
conditions include the following: (i) the tickets must be non-refundable,
non-endorsable and non-changeable; (ii) all travel must be round-trip between
the same two points of departure and return, with no stopovers permitted; (iii)
the tickets are not eligible for frequent flyer mileage or upgrades; (iv)
consumers must agree to accept up to
 
                                       41
<PAGE>
one stop or connection on both their departing and return flights; (v) consumers
must be willing to fly on any participating airline; and (vi) consumers must be
willing to depart at any time after 6 a.m. and land any time before 10 p.m. of
day on the requested dates. In addition, all offers must be guaranteed with a
major credit card, and the ability of consumers to make multiple offers with
respect to the same travel itinerary is limited.
 
    The Airline Participation Agreements are generally subject to termination
upon 30 days' notice by priceline.com or the airline. The Company's agreement
with Delta, however, (i) provides for a ten-year term, subject to (a) the right
of Delta to terminate the agreement at any time after three years and upon a
change in control of the Company (other than a change of control upon an initial
public offering) and (b) the right of either party to terminate upon a material
breach by the other party; and (ii) establishes an allocation protocol for
selection of an airline to issue a ticket when there is more than one airline
providing an acceptable fare.
 
    In addition to the Airline Participation Agreements, the Company entered
into a related agreement with Delta which provides, among other things, certain
incentives designed to encourage Delta to increase its participation in
priceline.com's buying service. For example, Delta is entitled to share in
revenue generated from airline ticket sales on Delta if the Company's gross
margin on such sales exceeds approximately 14% in any calendar quarter. In
addition, the Company is required to use the highest qualifying fare to fulfill
ticket requests allocable to Delta, subject to an agreed minimum profit margin
to the Company. The agreement also requires the Company to obtain Delta's
concurrence prior to including additional participants in priceline.com's
airline service, subject to certain exemptions and qualifications. Delta also
may require the exclusion of specific markets in order for certain other
airlines to participate. Further, the Company is required to license its
buyer-driven commerce system to Delta on a non-exclusive basis and on
commercially reasonable terms under certain conditions. In addition, the
Company's ability to transfer or license its intellectual property to other
travel providers is limited in certain ways.
 
    In connection with the Airline Participation Agreement with Delta, the
Company also issued to Delta the Delta Warrant to purchase up to 15,114,083
shares of Common Stock at an exercise price of $1.156862 per share. The Delta
Warrant vests subject to Delta's achieving certain predetermined levels of
ticket sales.
 
    MARKETING AGREEMENT FOR MORTGAGE SERVICES
 
    In connection with the Company's home mortgage service, the Company has
entered into a joint marketing relationship with LendingTree, an Internet based
mortgage service provider. Under this arrangement, the Company is responsible
for maintaining the mortgage service for the priceline.com Web site and for
consumer marketing. LendingTree provides the back-end processing system, which
presents the priceline.com offers to multiple mortgage lending institutions for
consideration.
 
    Under the terms of the Internet Marketing and Licensing Agreement, effective
as of August 1, 1998, between the Company and LendingTree, the Company receives
the majority of the net revenue generated by the mortgage program, and the
balance is earned by LendingTree. LendingTree is responsible for providing (i)
the substantive mortgage content of the mortgage service for the priceline.com
Web site; (ii) a network of lenders to participate in the mortgage program;
(iii) customer service; and (iv) the software required to effect a communication
system between the Company, LendingTree and the participating lenders.
LendingTree is also responsible for compliance with all regulations applicable
to the mortgage program and products, including the maintenance of requisite
broker licenses, registration, approvals and exemptions. The initial term of the
agreement began on August 1, 1998, expires one year from the commencement of the
priceline.com mortgage service and renews automatically thereafter. The
agreement may be terminated by either party after the initial term expires, or
immediately in the event that the other party materially breaches the agreement
or becomes subject to a bankruptcy proceeding.
 
                                       42
<PAGE>
    HOTEL ALLIANCES
 
    In connection with the Company's hotel service, the Company has entered into
letter agreements with eight hotel chains. The agreements generally provide for
the hotels to supply the Company with competitive net rates for hotel properties
included in the priceline.com service. Hotels must be of 2-star quality or
higher, with priceline.com to make the final quality determination. These letter
agreements do not require the hotels to provide any minimum level of inventory.
In most cases the agreements are cancellable by either party at any time.
 
COMPETITION
 
    The Company competes with both online and traditional sellers of the
products and services offered on priceline.com. The market for selling products
and services over the Internet is new, rapidly evolving and intensely
competitive. Current and new competitors can launch new sites at a relatively
low cost. In addition, the traditional retail industry for the products and
services priceline.com offers is intensely competitive.
 
    The Company currently or potentially competes with a variety of companies
with respect to each product or service it offers. With respect to travel
products, these competitors include: (i) Internet travel agents such as
Travelocity, Preview Travel and Microsoft's Expedia.com; (ii) traditional travel
agencies; (iii) consolidators and wholesalers of airline tickets and other
travel products; (iv) individual airlines, hotels, rental car companies, cruise
operators and other travel service providers; and (v) operators of travel
industry reservation databases such as Worldspan and Sabre. The Company's
current or potential competitors with respect to new automobiles include
traditional and online auto dealers, including newly developing auto super
stores such as Auto Nation, Auto-by-Tel and Microsoft's CarPoint. With respect
to financial service products, priceline.com's competitors include: (i) banks
and other financial institutions; (ii) online and traditional mortgage and
insurance brokers, including Quicken Mortgage, E-Loan and Home Shark; and (iii)
insurance companies.
 
    The Company potentially faces competition from unanticipated alternatives to
the priceline.com demand collection system from a number of large Internet
companies and services that have expertise in developing online commerce and in
facilitating Internet traffic, including America Online, Microsoft and Yahoo!,
who could choose to compete with priceline.com either directly or indirectly
through affiliations with other e-commerce companies. Other large companies with
strong brand recognition, technical expertise and experience in Internet
commerce could also seek to compete with the Company. Competition from these and
other sources could have a material adverse effect on the Company's business,
results of operations and financial condition.
 
    The Company believes that the principal competitive factors in its markets
are brand recognition, price, Web site accessibility, ability to fulfill offers,
customer service, reliability of delivery, ease of use, and technical expertise
and capabilities. Many of the Company's current and potential competitors,
including Internet directories and search engines and large traditional
retailers, have longer operating histories, larger customer bases, greater brand
recognition and significantly greater financial, marketing, technical and other
resources than the Company. Certain of these competitors may be able to secure
products and services on more favorable terms than the Company. In addition,
many of these competitors may be able to devote significantly greater resources
to (i) marketing and promotional campaigns; (ii) attracting traffic to their Web
sites; (iii) attracting and retaining key employees; and (iv) Web site and
systems development, than the Company. Increased competition may result in
reduced operating margins, loss of market share and damage the Company's brand.
There can be no assurance that the Company will be able to compete successfully
against current and future competitors or that competition will not have a
material adverse effect on the Company's business, results of operations and
financial condition.
 
OPERATIONS AND TECHNOLOGY
 
    Priceline.com's business is supported by a state of the art systems
platform, which was designed with an emphasis on scalability, performance and
reliability. The Company's core demand collection and offer
 
                                       43
<PAGE>
processing systems are proprietary to the Company. The software platform and
architecture are built on server-side Java, C++, and ISO standard SQL scripts
integrated with an Oracle relational database system. This internal platform was
designed to include open application protocol interfaces that can provide
real-time connectivity to vendors in the range of industries in which the
priceline.com operates. These include large global inventory systems, such as
airline and hotel reservation systems (E.G., the Worldspan central reservation
systems), and financial service providers, as well as individual inventory
suppliers, such as auto dealers, individual hotels and hard goods merchants. The
Company's Internet servers utilize Verisign digital certificates to help it
conduct secure communications and transactions.
 
    Priceline.com out-sources most of its call center and customer service
functions, and uses a real-time interactive voice response system with transfer
capabilities to the Company's call centers and customer service centers in
Stamford, Connecticut; Columbus, Ohio; and Charlotte, North Carolina.
 
    The Company's systems infrastructure, Web and database servers are hosted at
Exodus Communications, Inc. ("Exodus") in Jersey City, New Jersey, which
provides communication lines from multiple providers including UUNet and AT&T,
as well as 24-hour monitoring and engineering support. Exodus has its own
generator and multiple back-up systems in Jersey City. Priceline.com also
maintains an uninterruptible power supply system and generator and redundant
servers at its Stamford, Connecticut headquarters to provide service capability
if the Exodus site fails.
 
    While priceline.com primarily is an Internet business, it also offers phone
service through its toll-free number, 1-800-Priceline. This service allows
consumers who do not have access to a computer to phone in their orders. From
launch to September 30, 1998, the Company has received approximately 15% of its
airline ticket orders through its toll-free number. In addition, consumers who
choose not to transmit their credit card information via the Internet have the
option of submitting their credit card information through the phone service.
The Company also uses its toll-free number to provide customer service.
 
INTELLECTUAL PROPERTY AND PROPRIETARY RIGHTS
 
    The Company's business model is protected by a business process patent
issued by the United States Patent and Trademark Office. While so-called
business process patents are only now becoming widely understood by the general
business community, a decision by the Court of Appeals for the Federal Circuit
(the highest United States appellate court for patent-related appeals below the
United States Supreme Court), recently affirmed the validity of patents covering
software and implemented business processes. STATE STREET BANK & TRUST CO. V.
SIGNATURE FINANCIAL GROUP, INC. (July 1998).
 
    Priceline.com currently holds two issued United States patents, No.
5,794,207 and No. 5,797,127, as well as seventeen pending United States patent
applications and one pending international patent application. The Company is in
the process of filing at least ten more patent applications, with an ongoing
program for identifying and protecting new inventions. Priceline.com's issued
patent generally covers its core buyer-driven commerce process of using a
computer to collect credit card-backed demand to present to multiple sellers,
receiving acceptances or fulfillment of this demand, and using the credit card
to provide a payment to the sellers. The pending patent applications are
directed to various operational features of the system, as well as to
product-specific enhancements.
 
    While the Company believes that its core business method patent, together
with its pending patent applications, help to protect the priceline.com
business, there can be no assurance (i) that the business process patent can be
successfully defended against challenges by third parties; (ii) that the pending
patent applications will result in the issuance of valid patents; or (iii)
competitors (or potential competitors) of the Company will not devise new
methods of competing with the Company that are not covered by the Company's
patent or patent applications. The Company has recently been notified that a
third party intends to challenge its core business method patent. See "-- Legal
Proceedings." In addition, the Company has recently learned of an Internet
travel service that uses a customer-offer based transaction model.
 
                                       44
<PAGE>
    The Company seeks to protect its copyrights, service marks, trademarks,
trade dress and trade secrets through a combination of laws and contractual
restrictions (such as confidentiality agreements). For example, the Company
attempts to register its trademarks and service marks in the U.S. and
internationally. However, effective trademark, service mark, copyright and trade
secret protection may not be available in every country in which the Company's
services are made available online.
 
    The Company currently owns the Internet domain name "priceline.com." Domain
names generally are regulated by Internet regulatory bodies. The relationship
between regulations governing domain names and laws protecting trademarks and
similar proprietary rights is unclear. The Company, therefore, could be unable
to prevent third parties from acquiring domain names that infringe or otherwise
decrease the value of its trademarks and other proprietary rights. See "Risk
Factors -- Protection and Enforcement of Our Intellectual Property Rights."
 
GOVERNMENTAL REGULATION
 
    The products and services offered through the priceline.com service are
regulated by federal and state governments.
 
    TRAVEL SERVICES
 
    The Company is subject to the laws and regulations of a number of states
governing the offer and/or sale of travel services. For example, Priceline
Travel is registered as a "seller of travel" under the California Seller of
Travel Act and is a member of the Airline Reporting Corporation. Priceline.com
also will be making similar filings for registration and membership prior to
consummation of this offering. In addition, a number of state travel laws and
regulations require compliance with specific disclosure, bond and/or other
requirements. All travel registrations are presently held by Priceline Travel.
To the extent that such registrations can be transferred by merger, the Company
intends to succeed to all such registrations by merging with Priceline Travel
prior to the consummation of this offering. The Company expects to obtain all
other required travel related registrations prior to the consummation of this
offering.
 
    NEW CAR SALES
 
    A number of states have laws and regulations governing the registration and
conduct of automobile dealers and brokers. Such laws generally provide that any
person receiving direct or indirect compensation for selling automobiles or
brokering automobile transactions must register as an automobile broker or
dealer. Registration for automobile dealers/brokers may, among other things,
require the registrant to maintain a physical office in the applicable state, a
dealer lot zoned for automobile sales within the applicable state and/or a
franchise agreement with the manufacturers of the automobiles to be sold. The
Company believes that it is not subject to such automobile dealer/broker laws
because priceline.com is a car buying service, and not a seller or broker of
automobiles, operating on behalf of customers and participating dealers.
 
    It is uncertain how automobile dealer and broker laws apply to the provision
of automobile selling services offered through the Internet. The Company has
been orally advised by representatives of a number of states that generally, no
enforcement action will be initiated against Internet companies for
non-compliance with such laws until clearer regulatory or legislative guidance
is provided.
 
    It is possible, however, that state regulatory bodies could take the view
that priceline.com is subject to automobile broker and dealer laws, in which
case they could attempt to require the Company to register as an automobile
broker/dealer in the applicable states. Given the nature of the Company's
business, any requirement to register under such laws could severely interfere
with the conduct of the Company's business.
 
    HOME MORTGAGES
 
    Most states have laws and regulations governing the registration or
licensing and conduct of persons providing mortgage brokerage services. Such
laws and regulations also typically require certain consumer
 
                                       45
<PAGE>
protection disclosures, loan solicitation procedures and a variety of other
practices throughout the various stages of the mortgage solicitation,
application and approval process.
 
    In addition to state law, mortgage brokerage services are heavily regulated
by federal law. For example, the Real Estate Settlement Procedures Act
("RESPA"), prohibits the payment and receipt of mortgage loan referral fees.
RESPA, however, does permit persons to be compensated for the fair market value
of non-referral services actually rendered.
 
    The Company expects to introduce its home mortgage service in the first
quarter of 1999. LendingTree will serve as the mortgage broker and will provide
all mortgage brokerage services. The Company will provide and maintain the home
mortgage service on its Web site and will develop and purchase all advertising.
LendingTree will compensate the Company for the fair market value of its
non-referral services. The Company believes that offering the priceline.com home
mortgage service does not require our registration under or compliance with the
mortgage or similar brokerage laws of any jurisdiction. However, it is possible
that one or more regulatory authorities could seek to enforce existing laws, or
otherwise enact new legislation, requiring the Company's registration and
compliance and could scrutinize the compensation arrangement between LendingTree
and the Company under RESPA or other federal or state laws. Such action could
severely interfere with the conduct of the priceline.com business.
 
    LendingTree will provide the mortgage brokerage services offered through the
priceline.com home mortgage service on the Company's Web site and will maintain
the necessary and appropriate state registrations and licenses associated with
LendingTree's provision of those mortgage brokerage services. If a federal or
state regulatory authority, or an aggrieved customer, should in the future claim
that LendingTree has failed to comply fully with applicable federal or state law
requirements pertaining to LendingTree's provision of mortgage brokerage
services, the priceline.com home mortgage service could be materially and
adversely affected and the Company may be unable to continue to make its home
mortgage services Web site available, either to residents of affected state(s)
or on a national basis.
 
    CONSUMER PROTECTION AND RELATED LAWS
 
    All of the Company's services are subject to federal and state consumer
protection laws and regulations prohibiting unfair and deceptive trade
practices. The Company is also subject to related "plain language" statutes in
place in many jurisdictions, which require the use of simple, easy to read,
terms and conditions in contracts with consumers.
 
    Although there are very few laws and regulations directly applicable to the
protection of consumers in an online environment, it is possible that
legislation will be enacted in this area and could cover such topics as
permissible online content and user privacy (including the collection, use,
retention and transmission of personal information provided by an online user).
Furthermore, the growth and demand for online commerce could result in more
stringent consumer protection laws that impose additional compliance burdens on
online companies. Such consumer protection laws could result in substantial
compliance costs and interfere with the conduct of the priceline.com business.
 
    BUSINESS QUALIFICATION LAWS
 
    Because the Company's service is available over the Internet in multiple
states, and because the Company sells to numerous consumers resident in such
states, such jurisdictions may claim that the Company is required to qualify to
do business as a foreign corporation in each such state. The Company is
qualified to do business in a limited number of states, and failure by the
Company to qualify as a foreign corporation in a jurisdiction where the Company
is required to do so could subject the Company to taxes and penalties for the
failure to so qualify.
 
    INTERNATIONAL EXPANSION
 
    The Company intends to explore opportunities for expanding the priceline.com
business into international markets. It is possible, however, that the
priceline.com demand collection system will not be readily adaptable to
regulatory environments of certain foreign jurisdictions. In addition, there are
various other
 
                                       46
<PAGE>
risks associated with international expansion. They include language barriers,
unexpected changes in regulatory requirements, trade barriers, problems in
staffing and operating foreign operations, changes in currency exchange rates,
difficulties in enforcing contracts and other legal rights, economic and
political instability and problems in collection.
 
LEGAL PROCEEDINGS
 
    The Company has received verbal notice of a third party's intent to file
with the United States Patent and Trademark Office a request to declare an
"interference" with the Company's core buyer-driven commerce business patent. An
interference is requested when a patent applicant asserts claims that he or she
is a prior inventor of subject matter covered by one or more claims in a third
party issued patent or pending application. A successful interference action
could prohibit the original patent holder from exploiting the invention
entirely. The Company has received notice of the potential interference from the
holder of two related United States Patent applications, one of which has since
been issued as a patent. The Company is currently awaiting information from the
Patent and Trademark Office regarding the status of the interference request.
The Company has reviewed a published international patent application, based on
the two United States patent applications, with outside intellectual property
counsel and believes that there is no reasonable basis for the United States
Patent and Trademark Office to declare an interference action, and, if an
interference is declared, there is no reasonable basis to resolve such
interference adversely. However, if an interference action is declared, the
patent office could then seek to determine whether one or more of our patent
claims were invalid. If an interference is subsequently resolved in a manner
adverse to the Company, such declaration or resolution could prevent the Company
from exploiting its business model through the priceline.com service or require
us to obtain licenses from one or more other patent holders at a cost which may
adversely affect our business.
 
    From time to time the Company has been and expects to continue to be subject
to legal proceedings and claims in the ordinary course of business, including
claims of alleged infringement of third party intellectual property rights by
the Company. Such claims, even if not meritorious, could result in the
expenditure of significant financial and managerial resources. The Company is
not aware of any legal proceedings or claims that it believes will have,
individually or in the aggregate, a material adverse effect on its business,
financial condition or results of operations.
 
EMPLOYEES
 
    Currently, the Company has 124 full-time employees. In addition, through an
Intercompany Agreement with Walker Digital Corporation ("Walker Digital"), the
Company receives a variety of services, including research and development,
patent and other intellectual property services and technical support. The
Company also employs independent contractors to support its customer service and
system support functions. See "Certain Transactions."
 
    The Company has never had a work stoppage and its employees are not
represented by any collective bargaining unit. The Company considers its
relations with its employees to be good. The Company's future success will
depend, in part, on its ability to continue to attract, integrate, retain and
motivate highly qualified technical and managerial personnel, for whom
competition is intense.
 
FACILITIES
 
    The Company's executive, administrative and operating offices are located in
approximately 35,000 square feet of leased office space located in Stamford,
Connecticut. The Company is subleasing this office space from Walker Digital on
a month-to-month basis. The Company anticipates that it will require additional
space within the next 12 months to accommodate its anticipated growth and that
suitable office space will be available on commercially reasonable terms.
 
                                       47
<PAGE>
                                   MANAGEMENT
 
DIRECTORS AND EXECUTIVE OFFICERS
 
    Set forth below is certain information regarding the directors and executive
officers of the Company as of the date hereof. Service with the Company prior to
July 1998 was rendered to the Company's predecessor, priceline.com LLC.
 
<TABLE>
<CAPTION>
NAME                                           AGE                                POSITION
- ------------------------------------------     ---     ---------------------------------------------------------------
<S>                                         <C>        <C>
Richard S. Braddock.......................         57  Chairman and Chief Executive Officer
Jay S. Walker.............................         43  Founder and Vice Chairman
Jesse M. Fink.............................         41  Chief Operating Officer
Paul E. Francis...........................         44  Chief Financial Officer
Mark Benerofe.............................         39  Executive Vice President, Corporate Development
Timothy G. Brier..........................         50  Executive Vice President, Travel
Melissa M. Taub...........................         35  Senior Vice President, General Counsel and Secretary
Thomas P. D'Angelo........................         39  Vice President, Finance and Controller
Ralph M. Bahna(1).........................         56  Director
Paul J. Blackney(2).......................         52  Director
William E. Ford(2)........................         37  Director
Marshall Loeb(1)..........................         69  Director
N.J. Nicholas, Jr(1)(2)...................         59  Director
</TABLE>
 
- ------------------------
 
(1) Member of the Compensation Committee.
 
(2) Member of the Audit Committee.
 
    RICHARD S. BRADDOCK has served as Chairman of the Board and Chief Executive
Officer of the Company since July 1998. Since September 1997, he has served as
the non-executive Chairman of True North Communications, Inc., from which he
intends to resign effective January 31, 1999. From September 1996 to August
1997, he served as a special advisor to GAP LLC. He also served as Chief
Executive Officer of Medco Containment Services during 1992. From 1973 to 1992,
Mr. Braddock held a variety of positions at Citicorp and its principal
subsidiary, Citibank, N.A., including President and Chief Operating Officer. Mr.
Braddock also serves as a director of NewSub Services, Walker Digital, Eastman
Kodak Company, E*Trade Group, Inc. and Cadbury Schweppes plc.
 
    JAY S. WALKER is the Company's Founder and has served as Vice Chairman of
the Board of the Company since August 1998. From inception through July 1998, he
served as Chairman of the Board and Chief Executive Officer of the Company. Mr.
Walker also is the Chairman of Walker Digital, which he founded in September
1994. In addition, he is the co-founder and non-executive Chairman of NewSub
Services.
 
    JESSE M. FINK has been the Chief Operating Officer of the Company since its
inception. Since June 1996, he has served as Chief Operating Officer of Walker
Digital. From November 1984 to June 1996, Mr. Fink served in various capacities
with C.U.C. International, a membership marketing company that is now part of
Cendant Corporation, including as a Divisional Senior Vice President--New
Business Development.
 
    PAUL E. FRANCIS has been the Chief Financial Officer of the Company since
its inception. From April 1993 to February 1997, Mr. Francis was Executive Vice
President--Finance and Administration, Chief Financial Officer and a member of
the Board of Directors of Ann Taylor Stores Corporation, a specialty retailer of
women's apparel. From 1986 to April 1993, Mr. Francis served in a variety of
positions, including Managing Director in the Investment Banking Division, at
Merrill Lynch & Co. and certain of its affiliates.
 
                                       48
<PAGE>
    MARK BENEROFE has been Executive Vice President, Corporate Development, of
the Company since August 1998. He also has been Chief Marketing Officer of
Walker Digital since August 1998. From 1996 to 1998, Mr. Benerofe was Senior
Vice President, Entertainment Programming & Systems Development, of Sony Online
Entertainment, an entertainment and electronics company. From 1993 to 1998, he
was a partner in Vortex Communications, a strategic marketing and product
development service for online commerce, and from 1993 to 1994, he was the
Director of Interactive Media at Microsoft.
 
    TIMOTHY G. BRIER has been an Executive Vice President, Travel of the Company
since its inception, and the President of Priceline Travel since June 1998. In
1994, Mr. Brier co-founded CAP Systems, a division of NewSub Services that
provides affinity marketing programs to airlines, and served as its President
from 1995 to 1998. From 1990 to 1995, he was Vice President of Marketing for
Continental Airlines. From 1988 to 1990, Mr. Brier was Vice President of
Marketing Planning for Pan American World Airways and from 1985 to 1988 was Vice
President of Marketing for TWA.
 
    MELISSA M. TAUB has been Senior Vice President, General Counsel and
Secretary of the Company since September 1998. Prior to joining the Company, Ms.
Taub practiced law in the Business Clients Department of Cummings & Lockwood, a
law firm with its principal office located in Stamford, Connecticut, serving as
a partner from January 1998 to September 1998 and an associate from 1989 to
December 1997.
 
    THOMAS P. D'ANGELO has been Vice President, Finance and Controller of the
Company since October 1997. From April 1993 to October 1997, he was Chief
Financial Officer of Direct Travel, Inc., a corporate travel agency.
 
    RALPH M. BAHNA has served as a director of the Company since July 1998.
Since 1992, Mr. Bahna has been the President of Masterworks Development Corp., a
company he founded to develop a chain of hotels named Club Quarters-TM-. From
1980 to 1989, Mr. Bahna served as the Chief Executive Officer of Cunard Lines,
Ltd., and the Cunard Group of Companies.
 
    PAUL J. BLACKNEY has served as a director of the Company since July 1998.
Since January 1998, he has been the Chairman of XTRA On-Line Corporation, a
business to business desktop booking system. Since September 1993, he has been
the Chairman and President of Galileo Japan. From September 1993 to September
1997, Mr. Blackney served as President and Chief Executive Officer of Apollo
Travel Services Partnership, an airline central reservation system, and from
March 1990 to September 1993, he served as Senior Vice President of Operations
at Covia, an airline central reservation system.
 
    WILLIAM E. FORD has served as a director of the Company since July 31, 1998.
He is a Managing Member of GAP LLC, a private equity fund that invests in
software and information technology companies, where he has served since 1991.
Mr. Ford also serves as a director of GT Interactive Software Corp., an
interactive entertainment software company; MAPICS, Inc., a resources planning
software applications company; Envoy Corporation, an electronic data processing
company; LHS Group Inc., a billing solutions company; E*Trade Group, Inc., an
online discount broker; Eclipsys Corporation, a provider of clinical, financial
and administrative software solutions to the healthcare industry; and several
private information technology companies. Mr. Ford serves on the Company's Board
of Directors as the designee of GAP LLC pursuant to the terms of the Series A
Convertible Preferred Stock. He also serves as a director of NewSub Services.
 
    MARSHALL LOEB has served as a director of the Company since July 1998. He is
the Editor of the COLUMBIA JOURNALISM REVIEW and the author of MARSHALL LOEB'S
LIFETIME FINANCIAL STRATEGIES. Mr. Loeb also is the broadcast commentator for
the CBS Radio Network "Your Dollars" program. Mr. Loeb is a member of the Board
of Overseers for the Stern School of Business at New York University, the
Chairman of the Advisory Board of the Bagehot Fellows Program at Columbia
University. From 1994 to 1996, he was a columnist for FORTUNE and from 1986 to
1994, he served as the Managing Editor of FORTUNE magazine. From 1980 to 1984,
he also was Managing Editor of MONEY magazine. Mr. Loeb also has served as the
Business Editor, Nation Editor and Economics Editor of TIME magazine.
 
                                       49
<PAGE>
    N. J. NICHOLAS, JR. has served as a director of the Company since July 1998.
From 1990 to 1992, he was the co-Chief Executive Officer of Time Warner Inc. and
from 1986 to 1990 he was President of Time Inc. He also is a director of the
Bankers Trust New York Corporation, Boston Scientific Corporation, Xerox
Corporation and BT Capital Partners. He also serves on the boards of several
privately owned media companies and is Chairman of the Advisory Board of the
Columbia University Graduate School of Journalism.
 
BOARD COMMITTEES
 
    The Company's Board of Directors has an Audit Committee and a Compensation
Committee. The Audit Committee of the Board consists of Messrs. Paul J.
Blackney, William E. Ford and N.J. Nicholas, Jr. The Audit Committee reviews the
Company's financial statements and accounting practices, makes recommendations
to the Board regarding the selection of independent auditors and reviews the
results and scope of the audit and other services provided by the Company's
independent auditors. The Compensation Committee of the Board consists of
Messrs. Ralph M. Bahna, Marshall Loeb and N.J. Nicholas, Jr. The Compensation
Committee makes recommendations to the Board concerning salaries and incentive
compensation for the Company's officers and employees and administers the
Company's employee benefit plans.
 
DIRECTOR COMPENSATION
 
    Directors who are also employees of the Company receive no compensation for
serving on the Board of Directors. With respect to Directors who are not
employees of the Company ("Non-Employee Directors"), the Company reimburses such
directors for all travel and other expenses incurred in connection with
attending Board of Directors and committee meetings. Non-Employee Directors are
also eligible to receive stock option grants under the 1997 Omnibus Plan.
Pursuant to such plan, Messrs. Bahna, Blackney, Ford and Loeb received grants of
25,000 options each in December 1998. Such options have vested and are
exercisable at any time at an exercise price of $4.00 per share, subject to
certain restrictions described under "Shares Eligible for Future Sale."
 
COMPENSATION COMMITTEE INTERLOCKS AND INSIDER PARTICIPATION
 
    None of the members of the Compensation Committee of the Board is an officer
or employee of the Company. No executive officer of the Company serves as a
member of the board of directors or compensation committee of any entity that
has one or more executive officers serving on the Company's Compensation
Committee.
 
                                       50
<PAGE>
SUMMARY OF COMPENSATION
 
    The following Summary Compensation Table sets forth information concerning
compensation earned in the fiscal year ended December 31, 1998, by the Company's
Chief Executive Officer and its other four most highly compensated executive
officers (the "Named Executive Officers").
 
                           SUMMARY COMPENSATION TABLE
 
<TABLE>
<CAPTION>
                                                                                    LONG TERM COMPENSATION
                                                                                   ------------------------
                                                                                                 NUMBER OF
                                                ANNUAL COMPENSATION                             SECURITIES
                                   ----------------------------------------------  RESTRICTED   UNDERLYING
                                                                    OTHER ANNUAL      STOCK       OPTION/       ALL OTHER
                                               SALARY               COMPENSATION    AWARD(S)       SARS       COMPENSATION
NAME AND PRINCIPAL POSITION          YEAR        ($)     BONUS ($)       ($)           ($)          (#)            ($)
- ---------------------------------  ---------  ---------  ---------  -------------  -----------  -----------  ---------------
<S>                                <C>        <C>        <C>        <C>            <C>          <C>          <C>
Richard S. Braddock(1)...........       1998    112,500      0            0             0        5,000,000         (3)
  Chairman and Chief Executive
  Officer
Jay S. Walker(2).................       1998    250,000      0            0             0        1,212,000          0
  Vice Chairman and Founder
Jesse M. Fink....................       1998    227,083      0            0             0        1,955,000          1,028(5)
  Chief Operating Officer
Paul E. Francis..................       1998    225,000(4)     0          0             0          828,000            413(5)
  Chief Financial Officer
Timothy G. Brier.................       1998    177,083     72,917        0             0        1,602,500          6,789(5)
  Executive Vice President
</TABLE>
 
- ------------------------------
 
(1) Mr. Braddock commenced serving as Chairman and Chief Executive Officer in
    July 1998.
 
(2) Mr. Walker served as Chairman and Chief Executive Officer of priceline.com
    LLC since its formation, and of the Company until July 1998.
 
(3) Excludes the grant to Mr. Braddock in July 1998 of a profits interest with
    respect to 6,500,000 units in the Company's predecessor, priceline.com LLC,
    which units were converted into an equivalent number of shares of Common
    Stock.
 
(4) Includes distributions as a member in the Company's predecessor,
    priceline.com LLC.
 
(5) Represents life insurance premiums (and, in the case of Mr. Fink, disability
    insurance premiums) paid for the fiscal year.
 
STOCK OPTIONS
 
    The following table sets forth information concerning the grant of stock
options to each of the Named Executive Officers during the fiscal year ended
December 31, 1998.
 
                       OPTION GRANTS IN LAST FISCAL YEAR
 
<TABLE>
<CAPTION>
                                                                 INDIVIDUAL GRANTS (1)
                                              ------------------------------------------------------------
<S>                                           <C>          <C>              <C>            <C>              <C>
                                               NUMBER OF
                                              SECURITIES
                                              UNDERLYING     % OF TOTAL                                     GRANT DATE
                                                OPTIONS    OPTIONS GRANTED   EXERCISE OR                      PRESENT
                                                GRANTED    TO EMPLOYEES IN   BASE PRICE                        VALUE
NAME                                              (#)        FISCAL YEAR       ($/SH)      EXPIRATION DATE    ($)(2)
- --------------------------------------------  -----------  ---------------  -------------  ---------------  -----------
Richard S. Braddock.........................   5,000,000           30.6            1.00         6/1/2008       812,579
Jay S. Walker...............................   1,212,000            7.4            1.00         6/1/2008       196,969
Jesse M. Fink...............................   1,955,000           12.0            1.00         6/1/2008       317,718
Paul E. Francis.............................     828,000            5.1            1.00         6/1/2008       139,563
Timothy G. Brier............................   1,602,500            9.8            1.00         6/1/2008       260,431
</TABLE>
 
- ------------------------------
 
(1) Options become exercisable as follows: (i) with respect to Mr. Braddock: (a)
    2 million shares upon consummation of this offering and (b) 3 million shares
    on the earliest to occur of (x) the Company having a public market
    capitalization of $750 million for five consecutive trading days, (y) the
    Company having pre-tax operating income of $30 million or more over a
    twelve-month period
 
                                       51
<PAGE>
    occurring over four consecutive fiscal quarters or (z) August 15, 2007; (ii)
    with respect to Mr. Walker: (a) one million shares are vested, but are not
    exercisable until expiration of the lock-up period, (b) 106,000 shares will
    vest on June 1, 1999, but are not exercisable until expiration of the
    lock-up period and (c) the remainder of the shares vest on June 1, 2000;
    (iii) with respect to Mr. Fink: (a) 1,200,000 shares are vested, but are not
    exercisable until expiration of the lock-up period, (b) 500,000 shares will
    vest on June 1, 1999, but are not exercisable until expiration of the
    lock-up period and (c) the remainder of the shares vest on June 1, 2000;
    (iv) with respect to Mr. Francis, (a) 300,000 shares are vested, but are not
    exercisable until expiration of the lock-up period, (b) 300,000 shares will
    vest on June 1, 1999, but are not exercisable until expiration of the
    lock-up period and (c) the remainder of the shares vest on June 1, 2000; and
    (v) with respect to Mr. Brier: (a) 750,000 shares are vested, but are not
    exercisable until expiration of the lock-up period, (b) 500,000 shares will
    vest on June 1, 1999, but that are not exerciseable until expiration of the
    lock-up period and (c) the remainder of the shares vest on June 1, 2000.
 
(2) Based on Black-Scholes pricing model, using a discount rate of 6 percent, an
    expected life of 3 years, no dividends and no volatility.
 
EXERCISE OF OPTIONS AND YEAR-END VALUES
 
    The following table sets forth information concerning the exercise of stock
options during the fiscal year ended December 31, 1998 by each of the Named
Executive Officers and the fiscal year-end value of unexercised options.
 
   AGGREGATED OPTION EXERCISES IN LAST FISCAL YEAR AND FISCAL YEAR-END OPTION
                                     VALUES
 
<TABLE>
<CAPTION>
                                                                                    NUMBER OF SHARES      VALUE OF
                                                                                       UNDERLYING      UNEXERCISED IN-
                                                                                       UNEXERCISED        THE-MONEY
                                                                                     OPTIONS/SARS AT   OPTIONS/SARS AT
                                                                                       FY-END (#)      FY-END ($) (1)
                                                                                    -----------------  ---------------
<S>                                             <C>                <C>              <C>                <C>
                                                 SHARES ACQUIRED        VALUE         EXERCISABLE/      EXERCISABLE/
NAMES                                            ON EXERCISE (#)    REALIZED ($)      UNEXERCISABLE     UNEXERCISABLE
- ----------------------------------------------  -----------------  ---------------  -----------------  ---------------
Richard S. Braddock...........................              0                 0        0/5,000,000      0/15,000,000
Jay S. Walker.................................              0                 0        0/1,212,000       0/3,636,000
Jesse M. Fink.................................              0                 0        0/1,955,000       0/5,865,000
Paul E. Francis...............................              0                 0         0/828,000        0/2,484,000
Timothy G. Brier..............................              0                 0        0/1,602,500       0/4,807,500
</TABLE>
 
- ------------------------
 
(1) Assumes a fiscal year-end market price of $4.00 per share.
 
STOCK BASED PLANS
 
    Pursuant to the priceline.com Incorporated 1997 Omnibus Plan (the "1997
Omnibus Plan"), the Company has granted awards of options to certain officers,
other employees, consultants and directors of the Company. The maximum number of
shares of Common Stock reserved for the grant or settlement of awards under the
1997 Omnibus Plan is 19,100,000 subject to adjustment as provided therein. Of
such number 17,419,375 options covering shares of Common Stock were outstanding
under the 1997 Omnibus Plan as of December 23 1998. Prior to the consummation of
this offering, the Company intends to establish the priceline.com Incorporated
1999 Omnibus Plan (the "1999 Omnibus Plan"), pursuant to which awards will be
made to certain officers, other employees, consultants and directors of the
Company from time to time following the consummation of this offering. The
maximum number of shares of Common Stock reserved for the grant or settlement of
awards under the 1999 Omnibus Plan will be 7.5 million subject to adjustment.
 
PRICELINE.COM INCORPORATED 1997 OMNIBUS PLAN
 
    The 1997 Omnibus Plan was ratified and approved by the Board of Directors of
the Company and by the Board of Managers and the members of priceline.com LLC in
1997. The 1997 Omnibus Plan is intended to promote the long term financial
interests and growth of the Company by providing employees,
 
                                       52
<PAGE>
officers, directors and consultants of the Company with appropriate incentives
and rewards to enter into and continue in the employ of, or their relationship
with, the Company and to acquire a proprietary interest in the long-term success
of the Company; and to reward the performance of individual officers, other
employees, consultants and directors in fulfilling their responsibilities for
long-range achievements.
 
    GENERAL
 
    The 1997 Omnibus Plan provides for the granting of awards to such officers,
other employees, consultants and directors of the Company and its affiliates as
the Compensation Committee, which is the committee of the Board appointed to
administer the 1997 Plan, may select from time to time. Awards under the 1997
Plan, may be made in the form of Options, Tandem SARs, Stand-Alone SARs,
Restricted Stock, Phantom Stock, Stock Bonuses or Other Awards.
 
    If any shares subject to an award are forfeited, cancelled, exchanged or
surrendered or if an award otherwise terminates or expires without a
distribution of shares to the holder of such award, the shares of Common Stock
with respect to such award will, to the extent of any such forfeiture,
cancellation, exchange, surrender, termination or expiration, again be available
for awards under the 1997 Omnibus Plan.
 
    In the event that the Compensation Committee determines that any dividend or
other distribution (whether in the form of cash, Common Stock, or other
property), recapitalization, stock split, reverse split, reorganization, merger,
consolidation, spin-off, combination, repurchase, or share exchange, or other
similar corporate transaction or event, affects the Common Stock such that an
adjustment is appropriate in order to prevent dilution or enlargement of the
rights of holders of awards under the 1997 Omnibus Plan, then the Compensation
Committee will make such equitable changes or adjustments as it deems necessary
or appropriate to any or all of (i) the number and kind of shares of Common
Stock or other property (including cash) that may thereafter be issued in
connection with awards, (ii) the number and kind of shares of Common Stock or
other property (including cash) issued or issuable in respect of outstanding
awards and (iii) the exercise price, grant price, or purchase price relating to
any award; provided that, with respect to Incentive Stock Options, such
adjustment shall be made in accordance with Section 424(h) of the Code.
 
    ADMINISTRATION
 
    The 1997 Omnibus Plan will be administered by the Compensation Committee.
The Compensation Committee has the authority in its sole discretion, subject to
and not inconsistent with the express provisions of the 1997 Omnibus Plan, to
administer the 1997 Omnibus Plan and to exercise all the powers and authorities
either specifically granted to it under, or necessary or advisable in the
administration of, the 1997 Omnibus Plan, including, without limitation, the
authority to grant awards; to determine the persons to whom and the time or
times at which awards shall be granted; to determine the type and number of
awards to be granted, the number of shares of Common Stock to which an award may
relate and the terms, conditions, restrictions and performance goals relating to
any award; to determine whether, to what extent, and under what circumstances an
award may be settled, canceled, forfeited, exchanged, or surrendered; to make
adjustments in the performance goals in recognition of unusual or non-recurring
events affecting the Company or the financial statements of the Company (to the
extent not inconsistent with Section 162(m) of the Code, if applicable), or in
response to changes in applicable laws, regulations, or accounting principles;
to construe and interpret the 1997 Omnibus Plan and any award; to prescribe,
amend and rescind rules and regulations relating to the 1997 Omnibus Plan; to
determine the terms and provisions of agreements evidencing awards; and to make
all other determinations deemed necessary or advisable for the administration of
the 1997 Omnibus Plan.
 
    The Compensation Committee may, in its absolute discretion, without
amendment to the 1997 Omnibus Plan, (a) accelerate the date on which any Option
or Stand-Alone SAR granted under the 1997 Omnibus Plan becomes exercisable,
waive or amend the operation of provisions respecting exercise after
 
                                       53
<PAGE>
termination of employment or otherwise adjust any of the terms of such Option or
Stand-Alone SAR, (b) accelerate the vesting or waive any condition imposed with
respect to any Restricted Stock, Phantom Stock or Other Awards and (c) otherwise
adjust any of the terms applicable to any award.
 
    AWARDS UNDER THE 1997 OMNIBUS PLAN
 
    STOCK OPTIONS; STOCK APPRECIATION RIGHTS
 
    Unless otherwise determined by the Compensation Committee, Options granted
pursuant to the 1997 Omnibus Plan will become exercisable ratably over three
years commencing on the first anniversary of the date of grant, but in no event
may an Option be exercised more than 10 years following the date of its grant.
The purchase price per share payable upon the exercise of an Option (the "option
exercise price") will be established by the Compensation Committee; PROVIDED,
HOWEVER, that Incentive Stock Options may not have an exercise price less than
the fair market value of a share of Common Stock on the date of grant. The
option exercise price is payable by any one of the following methods or a
combination thereof, to the extent permitted by the Compensation Committee: (i)
in cash or by personal check, certified check, bank cashier's check or wire
transfer; (ii) subject to the approval of the Compensation Committee, in Stock
owned by the participant for at least six months prior to the date of exercise
and valued at their fair market value on the effective date of such exercise; or
(iii) subject to the approval of the Compensation Committee, by such other
provision as the Compensation Committee may from time to time authorize.
 
    The Compensation Committee also has the authority to specify, at the time of
grant or, with respect to Options that are not intended to qualify as Incentive
Stock Options ("Non-Qualified Stock Options"), at or after the time of grant,
that a participant shall be granted a new Non-Qualified Stock Option (a "Reload
Option") for a number of shares of Common Stock equal to the number of shares of
Common Stock surrendered by the participant upon exercise of all or a part of an
Option in the manner described above, subject to the availability of Common
Stock under the 1997 Omnibus Plan at the time of such exercise; provided,
however, that no Reload Option shall be granted to a nonemployee director.
Reload Options shall be subject to such conditions as may be specified by the
Compensation Committee in its discretion, subject to the terms of the 1997
Omnibus Plan.
 
    Stock appreciation rights ("SARs") may be granted alone ("Stand-Alone SARs")
or in tandem ("Tandem SARs") with Options. An SAR is a right to be paid an
amount in cash for each share of Common Stock subject to the SAR equal to the
excess of the fair market value of a share of Common Stock on the date the SAR
is exercised over either the fair market value of a share of Common Stock on the
date of grant (in case of a Stand-Alone SAR) or the exercise price of the
related stock option (in case of a Tandem SAR).
 
    RESTRICTED STOCK; PHANTOM STOCK
 
    A restricted stock award is an award of Common Stock ("Restricted Stock")
and a phantom stock award is an award of the right to receive cash or Common
Stock ("Phantom Stock") at a future date, in each case, that is subject to such
restrictions on transferability and other restrictions, if any, as the Committee
may impose at the date of grant or thereafter, which restrictions may lapse
separately or in combination at such times, under such circumstances (including
without limitation a specified period of employment or the satisfaction of
preestablished performance goals, when granted to executive officers), in such
installments, or otherwise, as the Compensation Committee may determine. The
Compensation Committee may grant Restricted Stock or Phantom Stock to such
persons, in such amounts, and subject to such terms and conditions as the
Compensation Committee may determine in its discretion; provided, however, that
shares of Restricted Stock and Phantom Stock granted to executive officers may
vest upon the attainment of performance goals pre-established by the
Compensation Committee, based on one or more of the following criteria: return
on total owner equity; earnings per share; pre-tax income or after-tax
 
                                       54
<PAGE>
income; revenue; return on assets; increases in EBITDA; or such other criteria
as the stockholders of the Company may approve.
 
    OTHER AWARDS
 
    Upon a determination by the Compensation Committee, an executive officer may
receive awards of shares of Common Stock. In addition, other awards valued in
whole or in part by reference to, or otherwise based on, Common Stock may be
granted either alone or in addition to other awards under the 1997 Omnibus Plan
("Other Awards"). Subject to the provisions of the 1997 Omnibus Plan, the
Compensation Committee will have the sole and complete authority to determine
the persons to whom and the time or times at which such Other Awards will be
granted, the number of shares of Common Stock to be granted pursuant to such
Other Awards and all other conditions of such Other Awards.
 
    AMENDMENT; TERMINATION
 
    The Board of Directors or the Compensation Committee may suspend, revise,
terminate or amend the 1997 Omnibus Plan at any time; PROVIDED, HOWEVER, that
(i) shareholder approval will be obtained if and to the extent required under
Rule 16b-3 promulgated under the Exchange Act or if and to the extent the Board
determines that such approval is required for purposes of satisfying Section
162(m) or Section 422 of the Code and (ii) no such suspension, revision,
termination or amendment may, without the consent of a participant, reduce the
participant's rights under any outstanding award.
 
    NEW 1997 PLAN BENEFITS
 
    The Company intends to grant additional awards under the 1997 Omnibus Plan
up to the maximum number of shares currently reserved for the grant or
settlement of awards under the 1997 Plan. See "Option Grants in Last Fiscal
Year" for the name, position and grant information for 1997 Omnibus Plan
participants who were granted awards thereunder during fiscal year 1998.
 
    CERTAIN FEDERAL INCOME TAX CONSEQUENCES
 
    The following discussion is a brief summary of the principal United States
federal income tax consequences under current federal income tax laws relating
to awards under the 1997 Omnibus Plan. This summary is not intended to be
exhaustive and, among other things, does not describe state, local or foreign
income and other tax consequences.
 
    NON-QUALIFIED STOCK OPTIONS
 
    An optionee will not recognize any taxable income upon the grant of a
Non-Qualified Stock Option. The Company will not be entitled to a tax deduction
with respect to the grant of a Non-Qualified Stock Option. Upon exercise of a
Non-Qualified Stock Option, the excess of the fair market value of the Common
Stock on the exercise date over the option exercise price will be taxable as
compensation income to the optionee and will be subject to applicable
withholding taxes. The Company will generally be entitled to a tax deduction at
such time in the amount of such compensation income. The optionee's tax basis
for the Common Stock received pursuant to the exercise of a Non-Qualified Stock
Option will equal the sum of the compensation income recognized and the exercise
price.
 
    In the event of a sale of Common Stock received upon the exercise of a
Non-Qualified Stock Option, any appreciation or depreciation after the exercise
date generally will be taxed as capital gain or loss.
 
    INCENTIVE STOCK OPTIONS
 
    An optionee will not recognize any taxable income at the time of grant or
timely exercise of an Incentive Stock Option and the Company will not be
entitled to a tax deduction with respect to such grant
 
                                       55
<PAGE>
or exercise. Exercise of an Incentive Stock Option may, however, give rise to
taxable compensation income subject to applicable withholding taxes, and a tax
deduction to the Company, if the Incentive Stock Option is not exercised on a
timely basis (generally, while the optionee is employed by the Company or within
90 days after termination of employment) or if the optionee subsequently engages
in a "disqualifying disposition," as described below.
 
    A sale or exchange by an optionee of shares acquired upon the exercise of an
Incentive Stock Option more than one year after the transfer of the shares to
such optionee and more than two years after the date of grant of the Incentive
Stock Option will result in any difference between the net sale proceeds and the
exercise price being treated as long-term capital gain (or loss) to the
optionee. If such sale or exchange takes place within two years after the date
of grant of the Incentive Stock Option or within one year from the date of
transfer of the Incentive Stock Option shares to the optionee, such sale or
exchange will generally constitute a "disqualifying disposition" of such shares
that will have the following results: any excess of (a) the lesser of (i) the
fair market value of the shares at the time of exercise of the Incentive Stock
Option and (ii) the amount realized on such disqualifying disposition of the
shares over (b) the option exercise price of such shares, will be ordinary
income to the optionee, subject to applicable withholding taxes, and the Company
will be entitled to a tax deduction in the amount of such income. Any further
gain or loss after the date of exercise generally will qualify as capital gain
or loss and will not result in any deduction by the Company.
 
    STOCK APPRECIATION RIGHTS
 
    The grant of stock appreciation rights has no federal income tax
consequences at the time of grant. Upon the exercise of stock appreciation
rights, the amount received is generally taxable as ordinary income, and the
Company is entitled to a corresponding deduction.
 
    RESTRICTED STOCK
 
    A grantee will not recognize any income upon the receipt of Restricted Stock
unless the holder elects under Section 83(b) of the Code, within thirty days of
such receipt, to recognize ordinary income in an amount equal to the fair market
value of the Restricted Stock at the time of receipt, less any amount paid for
the shares. If the election is made, the holder will not be allowed a deduction
for amounts subsequently required to be returned to the Company. If the election
is not made, the holder will generally recognize ordinary income, on the date
that the restrictions to which the Restricted Stock are subject are removed, in
an amount equal to the fair market value of such shares on such date, less any
amount paid for the shares. At the time the holder recognizes ordinary income,
the Company generally will be entitled to a deduction in the same amount.
 
    Generally, upon a sale or other disposition of Restricted Stock with respect
to which the holder has recognized ordinary income (I.E., a Section 83(b)
election was previously made or the restrictions were previously removed), the
holder will recognize capital gain or loss in an amount equal to the difference
between the amount realized on such sale or other disposition and the holder's
basis in such shares.
 
    RESTRICTED STOCK UNITS
 
    The grant of Restricted Stock Units has no federal income tax consequences
at the time of grant. Upon the receipt of payment, the amount received is
generally taxable as ordinary income, and the Company is entitled to a
corresponding deduction.
 
    OTHER TYPES OF AWARDS
 
    The grant of any other stock-based award generally will not result in income
for the grantee or in a tax deduction for the Company. Upon the settlement of
such an award, the grantee will recognize ordinary
 
                                       56
<PAGE>
income equal to the aggregate value of the payment received, and the Company
generally will be entitled to a tax deduction in the same amount.
 
EMPLOYMENT ARRANGEMENTS
 
    BRADDOCK EMPLOYMENT AGREEMENT.  Pursuant to an employment agreement, dated
as of August 15, 1998, between the Company and Mr. Richard M. Braddock (the
"Braddock Employment Agreement"), Mr. Braddock serves as the Chairman and Chief
Executive Officer of the Company through August 15, 2001. While the Braddock
Employment Agreement requires that Mr. Braddock devote a majority of his working
time to the Company, it also permits him to retain his current position as
non-executive Chairman of True North Communications, Inc. Mr. Braddock has,
however, indicated that he intends to resign from True North Communications,
Inc. effective as of January 31, 1999, and to serve as the Chairman and Chief
Executive Officer of the Company on a full-time basis for the remainder of the
term of the Braddock Employment Agreement. Pursuant to an agreement in principle
entered into July 10, 1998, by and between the Company and Mr. Braddock in
anticipation of entering into the Braddock Employment Agreement, Mr. Braddock
received 6,500,000 equity units in the Company's predecessor, which have since
been converted into 6,500,000 shares of Common Stock. Under the terms of the
Braddock Employment Agreement, Mr. Braddock is entitled to an initial annual
base salary of $300,000, subject to annual adjustment, and is eligible to
participate in any cash bonus program that may be introduced by the Company. The
Company also granted Mr. Braddock an option to purchase up to 5,000,000 shares
of Common Stock at an exercise price of $1.00 per share, subject to standard
anti-dilution adjustments. The option will become exercisable with respect to
2,000,000 of such shares upon consummation of this offering and will become
exercisable with respect to the remaining 3,000,000 shares on the earliest to
occur of (i) the Company having a public market capitalization of $750 million
for five consecutive trading days, (ii) the Company having pre-tax operating
income of $30 million or more over a twelve-month period occurring over four
consecutive fiscal quarters, or (iii) August 15, 2007, subject, in each case, to
acceleration or cancellation under certain circumstances in connection with the
termination of Mr. Braddock's employment. In connection with the execution of
the Braddock Employment Agreement, Mr. Braddock also received an option to
purchase an equity interest in Walker Digital from Walker Digital.
 
    FINK EMPLOYMENT AGREEMENT.  Pursuant to an employment agreement, dated as of
January 1, 1998, as amended (the "Fink Employment Agreement"), among the
Company, Walker Digital, Mr. Jay M. Walker and Mr. Jesse M. Fink, Mr. Fink
serves as the Chief Operating Officer of both the Company and Walker Digital for
a term expiring January 1, 2001. Under the terms of the Fink Employment
Agreement, Mr. Fink is entitled to an annual base salary of $225,000, subject to
annual adjustment, and is eligible to participate in any cash bonus program that
may be introduced by the Company. Payment of Mr. Fink's salary is allocated
between the Company and Walker Digital as mutually agreed. In addition, Mr. Fink
was issued 2,700,000 equity units in the priceline.com LLC, which units have
since been converted into 2,700,000 shares of Common Stock. The Company also
granted Mr. Fink an option to purchase up to 1,955,000 shares of Common Stock at
an exercise price of $1.00 per share, subject to standard anti-dilution
adjustments. The option (i) currently is vested for 1,200,000 of such shares
that are not exercisable until expiration of the lock-up period, (ii) will vest
for an additional 500,000 of such shares on June 1, 1999 that are not
exercisable until expiration of the lock-up period and (iii) will become
exercisable for the balance of such shares on June 1, 2000, subject in each
case, to acceleration or cancellation under certain circumstances in connection
with the termination of his employment. Under the terms of the Fink Employment
Agreement, Mr. Fink also is entitled to additional compensation from Walker
Digital and Mr. Walker. In addition, the Fink Employment Agreement provides
that, upon the mutual agreement of Mr. Fink and Mr. Walker, Mr. Fink may be
employed by an entity controlled by Jay Walker, other than the Company or Walker
Digital.
 
    BRIER EMPLOYMENT AGREEMENT.  Pursuant to an employment agreement, dated as
of July 23, 1998, as amended, (the "Brier Employment Agreement"), among the
Company and Mr. Timothy G. Brier,
 
                                       57
<PAGE>
Mr. Brier serves as an Executive Vice President of the Company and as the
President of Priceline Travel, Inc., through December 31, 2000. Under the terms
of the Brier Employment Agreement, Mr. Brier is entitled to an annual base
salary of $250,000, and until April 6, 1999, is entitled to receive cash bonuses
based upon the number of airlines and consolidators that participate in the
priceline.com service. Under certain circumstances, Mr. Brier may also be
entitled to a compensatory bonus that is designed to ensure that his aggregate
annual compensation for services rendered to the Company and CAP Systems,
another entity affiliated with Mr. Walker for which Mr. Brier continues to
provide services, equals $500,000. In addition, Mr. Brier was issued 1,200,000
equity units in priceline.com LLC, which have since been converted into
1,200,000 shares of Common Stock. The Company also granted Mr. Brier an option
to purchase up to 1,602,500 shares of Common Stock at an exercise price of $1.00
per share, subject to standard anti-dilution adjustments. The option (i)
currently is vested for 750,000 of such shares that are not exercisable until
expiration of the lock-up period, (ii) will vest for an additional 500,000 of
such shares on June 1, 1999 that are not exercisable until expiration of the
lock-up period and (iii) will become exercisable for the balance of such shares
on June 1, 2000, subject, in each case, to acceleration or cancellation under
certain circumstances in connection with the termination of Mr. Brier's
employment.
 
NEW CHIEF OPERATING OFFICER
 
    The Company recently has retained a recruitment firm to assist in the search
for a new Chief Operating Officer to replace Mr. Jesse M. Fink. Upon finding a
suitable replacement, Mr. Fink intends to resign as the Chief Operating Officer
of the Company, but will continue in his current position as the Chief Operating
Officer of Walker Digital. Mr. Fink may, however, provide services to the
Company in a different capacity.
 
INDEMNIFICATION OF DIRECTORS AND EXECUTIVE OFFICERS AND LIMITATION OF LIABILITY
 
    Section 145 of the Delaware General Corporation Law ("DGCL") authorizes a
corporation's board of directors to grant indemnity to directors and officers in
terms sufficiently broad to permit such indemnification under certain
circumstances for liabilities (including reimbursement for expenses incurred)
arising under the Securities Act.
 
    As permitted by the DGCL, the Company's Certificate of Incorporation
includes a provision that eliminates the personal liability of its directors for
monetary damages for breach of fiduciary duty as a director, except for
liability (i) for any breach of the director's duty of loyalty to the Company or
its stockholders; (ii) for acts or omissions not in good faith or that involve
intentional misconduct or a knowing violation of law; (iii) under section 174 of
the DGCL (regarding unlawful dividends and stock purchases) or (iv) for any
transaction from which the director derived an improper personal benefit.
 
    As permitted by the DGCL, the Company's By-Laws, provide that (i) the
Company is required to indemnify its directors and officers to the fullest
extent permitted by the Delaware General Corporation Law, subject to certain
very limited exceptions; (ii) the Company is permitted to indemnify its other
employees to the extent that it indemnifies its officers and directors, unless
otherwise required by law, its Certificate of Incorporation, its By-Laws or
agreements; (iii) the Company is required to advance expenses, as incurred, to
its directors and officers in connection with a legal proceeding to the fullest
extent permitted by the Delaware General Corporation Law, subject to certain
very limited exceptions; and (iv) the rights conferred in the By-Laws are not
exclusive.
 
                                       58
<PAGE>
                              CERTAIN TRANSACTIONS
 
CERTAIN EQUITY TRANSACTIONS
 
    In February 1998, a partnership affiliated with GAP LLC, purchased 2,283,900
equity units in the Company's predecessor, priceline.com LLC, for an aggregate
purchase price of $2.0 million, which units were converted into an equal number
of shares of Common Stock. In addition, these shares of Common Stock may be
exchanged under certain circumstances for shares of common stock of NewSub
Services or Walker Digital held by Mr. Jay S. Walker.
 
    In July 1998, the Company raised gross proceeds of $20,000,000 by completing
a private placement of an aggregate of 17,288,684 shares of Series A Convertible
Preferred Stock, par value $0.01 per share, of the Company (the "Series A
Convertible Preferred Stock") to two partnerships affiliated with GAP LLC. In
connection with the consummation of this transaction, the Company granted
certain registration rights to two partnerships affiliated with GAP LLC, Mr. Jay
S. Walker, Walker Digital, the Jay Walker Irrevocable Credit Trust, Mr. Richard
S. Braddock (Mr. Walker, the Jay Walker Irrevocable Credit Trust, Walker Digital
and Mr. Braddock are collectively referred to as the "Major Stockholders") and
certain other stockholders of the Company. In addition, the Company entered into
a Stockholders Agreement (the "Stockholders Agreement") with two partnerships
affiliated with GAP LLC, the Major Stockholders, Mr. Jesse M. Fink, Mr. Paul E.
Francis, Mr. Timothy G. Brier, Mr. Ralph M. Bahna, a trust affiliated with Mr.
N.J. Nicholas, Jr. and certain other stockholders of the Company. By its terms,
the Stockholders Agreement will terminate upon consummation of this offering.
The Series A Convertible Preferred Stock is automatically convertible (subject
to anti-dilution adjustment) into an equal number of shares of Common Stock upon
the consummation of this offering. See "Description of Capital Stock --
Registration Rights."
 
    In December 1998, the Company raised gross proceeds of $55,350,000 by
completing a private placement of an aggregate of 13,837,500 shares of Series B
Convertible Preferred Stock to a group of corporate and institutional investors
and high net worth individuals, including two partnerships affiliated with GAP
LLC, Vulcan, Liberty PL, Inc. (a wholly owned subsidiary of Liberty Media
Corporation), Quantum Industrial Partners LDC (a fund managed by Soros' Fund
Management, LLC) and Allen & Company, Incorporated. In connection with the
consummation of this transaction, the Company granted certain registration
rights to the purchasers of the Series B Convertible Preferred Stock. In
addition, the Company amended the Stockholders Agreement, which will by its
terms terminate upon consummation of this offering, to include the purchasers of
the Series B Convertible Preferred Stock. The Series B Convertible Preferred
Stock is automatically convertible (subject to anti-dilution adjustment) into an
equal number of shares of Common Stock upon the consummation of this offering.
See "Description of Capital Stock -- Registration Rights."
 
    In separate transactions, Mr. Richard S. Braddock, the Chief Executive
Officer of the Company, purchased 1,000,000 and 62,500 shares of Common Stock at
a purchase price of $1.00 per share and $4.00 per share, respectively, the
estimated fair value of the Common Stock at the time of such purchases.
 
    Priceline.com LLC issued to Mr. Jay S. Walker, the Founder of the Company,
28,512,169 equity units of priceline.com LLC upon its inception in consideration
for services previously rendered. Subsequently, Mr. Walker, an affiliated trust
and Walker Digital, a corporation controlled by Mr. Walker, purchased from
priceline.com LLC an aggregate of 20,170,364 additional equity units of
priceline.com LLC at a purchase price of $1.00 per unit, the estimated fair
market value of the units at the time of purchase. All of the aforementioned
units were converted into an equal number of shares of Common Stock of the
Company as a result of the merger of priceline.com LLC into the Company. Some of
the shares owned by Mr. Walker are subject to options and/or exchange rights
held by certain individuals. See "Options/ Exchange Rights."
 
                                       59
<PAGE>
    Priceline.com LLC issued to Messrs. Jesse M. Fink, Paul E. Francis, Timothy
G. Brier and two other officers of priceline.com LLC an aggregate of 5,880,000
equity units of priceline.com LLC upon its inception in consideration for
services previously rendered.
 
    Mr. Paul E. Francis, the Chief Financial Officer of the Company, purchased
from priceline.com LLC 570,776 equity units of priceline.com LLC at a purchase
price of $0.876 per share, the estimated fair market value of the units at the
time of such purchase. Mr. Ralph M. Bahna and Mr. N.J. Nicholas, Jr., each of
whom is a director of the Company, purchased through a trust, from priceline.com
LLC, 250,000 and 500,000 equity units of priceline.com LLC, respectively, at a
purchase price of $1.00 per unit, the estimated fair market value of the units
at the time of such purchases. All of the aforementioned units were converted
into an equal number of shares of Common Stock of the Company as a result of the
merger of priceline.com LLC into the Company. In addition, Mr. Paul J. Blackney,
who also is a director of the Company, purchased 86,207 shares of Common Stock
from the Company at a purchase price of $1.16 per share, the estimated fair
market value of the shares at the time of purchase.
 
RELATIONSHIP WITH WALKER DIGITAL
 
    The priceline.com service, and the business model and related intellectual
property rights underlying the priceline.com service, were developed in part by
executives, employees and/or consultants associated with Walker Digital, a
technology research and development company that was founded and is controlled
by Mr. Jay S. Walker, who is the Founder and Vice Chairman of the Company. These
individuals assigned all of their intellectual property rights relating to the
priceline.com service to Walker Digital's affiliate, WAMP, which subsequently
transferred the issued and pending patents covering the priceline.com service
and other related intellectual property rights to the Company pursuant to the
Purchase and Intercompany Services Agreement, dated as of April 16, 1998,
between the Company, Priceline Travel, Walker Digital and WAMP (the
"Intercompany Agreement"). In partial consideration for the transfer, Walker
Digital received 5,516,667 equity units in priceline.com LLC, which were
converted into an equal number of shares of Common Stock as a result of the
merger of priceline.com LLC into the Company. The Intercompany Agreement also
provides the Company with, among other things, a right to purchase at fair
market value any intellectual property that is in process or has been fully
developed and that is owned and subsequently acquired, developed or discovered
by Walker Digital or WAMP that will provide significant value in the use or
commercial exploitation of transferred intellectual property. The Company, in
turn, granted Walker Digital a perpetual, non-exclusive, royalty-free right and
license to use certain intellectual property related to the priceline.com
service for non-commercial internal research and development purposes. In
addition, Walker Digital also provides the Company with a variety of services,
including (i) research and development assistance; (ii) patent and intellectual
property services; and (iii) technical support. Walker Digital also subleases a
portion of its Stamford, Connecticut facilities to the Company on a
month-to-month basis. The Company also provides Walker Digital with certain
management and administrative services. Certain of the Company's executive
officers and other key employees also are directors, officers, employees or
stockholders of Walker Digital and either own, or hold an option to purchase,
equity securities of Walker Digital. See "Risk Factors --Conflicts of Interest."
 
    Priceline.com also issued a promissory note to Walker Digital for $1,000,000
in June 1998. The promissory note bore interest at a rate of 6% per annum and
was due June 30, 1999. As of the date of this Prospectus, the note has been
repaid.
 
OPTIONS/EXCHANGE RIGHTS
 
    Mr. Jay S. Walker, the Founder and Vice Chairman of the Company, has
personally granted certain individuals, including certain officers and directors
of the Company and a partnership affiliated with GAP priceline.com LLC, options
and/or exchange rights to purchase shares of common stock of the Company owned
by Mr. Walker. The options are exercisable, at the holder's election, for shares
of common stock of the Company, Walker Digital and/or NewSub Services.
Similarly, the exchange rights allow the holder of
 
                                       60
<PAGE>
shares of common stock of Walker Digital to exchange such shares for shares of
common stock of NewSub Services and/or the Company and the holders of shares of
Common Stock to exchange such shares for shares of common stock of NewSub
Services and/or Walker Digital. To the extent such options and exchange rights
are exercised for shares of Common Stock, the shares issued upon such exercise
will be from shares of Common Stock owned by Mr. Walker. Consequently, these
options and exchange rights will not require the Company to issue additional
shares of Common Stock, although they may result in a reduction of Mr. Walker's
ownership interest in the Company. Mr. Richard S. Braddock, the Chief Executive
Officer of the Company, and the NJN 1997 Family Trust (of which Mr. N.J.
Nicholas, Jr., a director of the Company, is the grantor), have exercised such
exchange rights for 1,500,000 and 2,000,000 shares of Common Stock,
respectively, that were formerly owned by Mr. Walker.
 
MERGER OF PRICELINE TRAVEL, INC. INTO THE COMPANY
 
    The Company's travel agency license is held by Priceline Travel, a separate
company owned by Mr. Jay S. Walker, the Company's Founder and Vice Chairman, and
all of the Company's airline ticket sales have been effected through Priceline
Travel. Accordingly, the financial statements of Priceline Travel are currently
presented on a combined basis with the Company for all relevant periods.
Pursuant to a Side Letter, dated December 8, 1998, between the Company,
Priceline Travel, Mr. Walker and certain stockholders of the Company, Priceline
Travel will be merged with and into the Company prior to the consummation of
this offering. Upon consummation of such merger, Mr. Walker will receive only
nominal consideration.
 
OTHER TRANSACTIONS
 
    The Company has entered into compensation arrangements with certain
directors and officers of the Company. See "Management -- Stock Based Plans --
Compensation Arrangements."
 
    The Company received a loan in the amount of $1.0 million from Mr. Michael
Loeb, a relative of Mr. Marshall Loeb, a director of the Company, and a loan in
the amount of $500,000 from Mr. Paul E. Francis, an executive officer of the
Company. The interest rate on each of the loans was 10%. As of the date of this
Prospectus, both of the loans have been repaid.
 
    The Company has granted registration rights to certain stockholders and
warrant holders. See "Description of Capital Stock--Registration Rights."
 
    Mr. Richard S. Braddock was a limited partner of GAP Coinvestment Partners,
L.P. from August 1996 to December 31, 1997 and served as a special advisor to
GAP LLC from September 1996 to August 1997. Mr. Braddock, however, did not
participate in any of the investments by GAP Coinvestment Partners, L.P. in the
Company.
 
    The Company offers its magazine subscription promotion pursuant to a revenue
sharing arrangement with NewSub Services, a direct marketing firm that is an
affiliate of Mr. Jay S. Walker, the Company's Founder and Vice Chairman. Under
the agreement with NewSub Services, the Company shares in a certain percentage
of the revenues generated upon the conversion of priceline.com generated
subscriptions to annual subscriptions after a six month free trial period. In
addition, partnerships affiliated with GAP LLC have invested approximately $59.3
million in NewSub Services.
 
                                       61
<PAGE>
                             PRINCIPAL STOCKHOLDERS
 
    The following table sets forth certain information known to the Company with
respect to beneficial ownership of the Company's Common Stock as of December 23,
1998 by (i) each stockholder known by the Company to be the beneficial owner of
more than 5% of the Company's Common Stock; (ii) each director of the Company;
(iii) the Named Executive Officers; and (iv) all executive officers and
directors as a group.
 
<TABLE>
<CAPTION>
                                                             SHARES BENEFICIALLY
                                                                OWNED PRIOR TO         SHARES BENEFICIALLY
                                                                 OFFERING(1)         OWNED AFTER OFFERING(1)
                                                           ------------------------  ------------------------
<S>                                                        <C>            <C>        <C>            <C>
NAME OF BENEFICIAL OWNER                                      NUMBER       PERCENT      NUMBER       PERCENT
- ---------------------------------------------------------  -------------  ---------  -------------  ---------
Jay S. Walker(2).........................................     50,274,200      47.1%     50,274,200
Richard S. Braddock(3)...................................     11,062,500      10.2%     11,062,500
Jesse Fink(4)............................................      3,900,000       3.6%      3,900,000
N. J. Nicholas, Jr.(5)...................................      2,500,000       2.3%      2,500,000
Timothy Brier(6).........................................      1,950,000       1.8%      1,950,000
Paul E. Francis(7).......................................      1,410,776       1.3%      1,410,776
Ralph Bahna(8)...........................................        275,000      *            275,000
Paul Blackney(9).........................................        111,207      *            111,207
William E. Ford(10)......................................     21,035,084      19.8%     21,035,084
Marshall Loeb(11)........................................         25,000      *             25,000
General Atlantic Partners, LLC(10).......................     21,035,084      19.8%     21,035,084
Vulcan Ventures Incorporated(12).........................      7,500,000         7%      7,500,000
All directors and executive officers
  as a group (13 persons)(10)(13)........................     92,860,434      83.3%     92,860,434
</TABLE>
 
- ------------------------
 
* Represents beneficial ownership of less than one percent.
 
(1) Beneficial ownership is determined in accordance with the rules of the
    Securities and Exchange Commission and generally includes voting or
    investment power with respect to securities. Shares of Common Stock options
    or warrants that are currently exercisable or exercisable within 60 days of
    December 23, 1998 are deemed to be outstanding and to be beneficially owned
    by the person holding such options for the purpose of computing the
    percentage ownership of such person but are not treated as outstanding for
    the purpose of computing the percentage ownership of any other person.
 
(2) Includes 6,016,667 shares held by Walker Digital Corporation of which Mr.
    Walker is Founder, Chairman and the controlling stockholder, and 4,400,000
    shares held by The Jay Walker Irrevocable Credit Trust. Also includes
    options outstanding to purchase 1,000,000 shares which are vested but not
    exercisable until expiration of the lock-up period. Excludes 212,000 shares
    subject to options that are not vested or exercisable within 60 days of
    December 23, 1998.
 
(3) Includes options outstanding to purchase 2,000,000 shares, which are
    exercisable on consummation of this offering. Excludes 3,000,000 shares
    subject to options that will become exercisable on the earlier to occur of
    (i) the Company having a public market capitalization of $750 million for
    five consecutive trading days, (ii) the Company having pre-tax operating
    income of $30 million or more over a twelve-month period occurring over four
    consecutive fiscal quarters, and (iii) August 15, 2007.
 
(4) Includes 700,000 shares held by The Jesse Fink 1998 Grantor Retained Annuity
    Trust and options outstanding to purchase 1,200,000 shares which are vested
    but not exercisable until the expiration of the lock-up period. Excludes
    755,000 shares subject to options that are not vested or exercisable within
    60 days of December 23, 1998.
 
(5) Represents shares held by The NJN 1997 Family Trust as to which Mr. Nicholas
    disclaims beneficial ownership.
 
                                       62
<PAGE>
(6) Includes 400,000 shares held by The Tim Brier 1998 Grantor Annuity Trust and
    6,000 shares held by immediate family members of Mr. Brier. Includes options
    outstanding to purchase 750,000 shares which are vested but not exercisable
    until expiration of the lock-up period. Excludes 852,500 shares subject to
    options that are not vested or exercisable within 60 days of December 23,
    1998.
 
(7) Includes 62,500 shares held by The Paul E. Francis 1998 Trust. Includes
    options outstanding to purchase 300,000 shares which are vested but not
    exercisable until expiration of the lock-up period. Excludes 528,000 shares
    subject to options that are not vested or exercisable within 60 days of
    December 23, 1998.
 
(8) Includes options outstanding to purchase 25,000 shares, which are vested but
    not exercisable until expiration of the lock-up period.
 
(9) Includes options outstanding to purchase 25,000 shares, which are vested but
    not exercisable until expiration of the lock-up period.
 
(10) Includes (a) 2,283,900 shares of Common Stock held by GAP Coinvestment
    Partners, L.P., (b) 2,074,642 and 15,214,042 shares of Series A Convertible
    Preferred Stock held by GAP Coinvestment Partners, L.P. and General Atlantic
    Partners 48, L.P. respectively, which will be converted (subject to
    anti-dilution adjustment) into an equal number of shares of Common Stock
    upon consummation of the offering, (c) 1,172,889 and 264,611 Shares of
    Series B Convertible Preferred Stock held by General Atlantic Partners 50,
    L.P. and GAP Coinvestment Partners, L.P., respectively, which will be
    converted (subject to anti-dilution adjustment) into an equal number of
    shares of Common Stock upon consummation of the offering and (d) options
    outstanding to purchase 25,000 shares which are vested but not exercisable
    until expiration of the lock-up period, which options are held by Mr.
    William E. Ford. The general partner of General Atlantic Partners 48, L.P.
    and General Atlantic Partners 50, L.P. is GAP LLC and the managing members
    of GAP LLC are also the general partners of GAP Coinvestment Partners, L.P.
    William E. Ford, a director of the Company, is a Managing Member of GAP LLC
    and a general partner of GAP Coinvestment Partners, L.P. Mr. Ford disclaims
    beneficial ownership of the shares referred to in clauses (a), (b) and (c)
    above, except to the extent of his pecuniary interest therein. GAP LLC and
    its affiliated partnerships disclaim beneficial ownership of the options
    referred to in clause (d) above. The address of GAP LLC and affiliated
    partnerships is 3 Pickwick Plaza, Greenwich, Connecticut 06830.
 
(11) Comprises options outstanding to purchase 25,000 shares which are vested
    but not exercisable until expiration of the lock-up period.
 
(12) Comprises 7,500,000 shares of Series B Convertible Preferred Stock, which
    will be converted into an equal number of shares of Common Stock upon
    consummation of the Offering. Excludes 125,000 shares held by an officer and
    director of Vulcan Ventures Incorporated. The address of Vulcan Ventures
    Incorporated is 110 110th Avenue N.E., Bellevue, Washington 98004-5840.
 
(13) Includes options outstanding to purchase 5,666,667 shares, which are either
    (i) exercisable upon consummation of this offering or (ii) vested but not
    exercisable until expiration of the lock-up period. Excludes 11,980,833
    shares subject to options that are not vested or exercisable within 60 days
    of December 23, 1998. The address of all directors and executive officers is
    Five High Ridge Park, Stamford, Connecticut 06905.
 
                                       63
<PAGE>
                          DESCRIPTION OF CAPITAL STOCK
 
    Immediately following the consummation of this offering, the authorized
capital stock of the Company will consist of 300,000,000 shares of Common Stock
and 150,000,000 shares of Preferred Stock, par value $0.01 per share, of the
Company (the "Preferred Stock"). Upon completion of this offering, there will be
outstanding   shares of Common Stock, outstanding options to purchase   shares
of Common Stock and outstanding warrants to purchase   shares of Common Stock.
 
COMMON STOCK
 
    Subject to preferences that may apply to shares of Preferred Stock
outstanding at the time, the holders of outstanding shares of Common Stock are
entitled to receive dividends out of assets legally available therefor at such
times and in such amounts as the Board of Directors may from time to time
determine. Each stockholder is entitled to one vote for each share of Common
Stock held on all matters submitted to a vote of stockholders. Cumulative voting
for the election of directors is not provided for in the Company's Certificate
of Incorporation, which means that the holders of a majority of the shares voted
can elect all of the directors then standing for election. The Common Stock is
not entitled to preemptive rights and is not subject to conversion or
redemption. Upon the occurrence of a liquidation, dissolution or winding-up of
the Company, the holders of shares of Common Stock would be entitled to share
ratably in the distribution of all of the Company's assets remaining available
for distribution after satisfaction of all its liabilities and the payment of
the liquidation preference of any outstanding Preferred Stock. Each outstanding
share of Common Stock is, and all shares of Common Stock to be outstanding upon
completion of this offering will be, fully paid and nonassessable.
 
PREFERRED STOCK
 
    The Board of Directors has the authority, within the limitations and
restrictions stated in the Certificate of Incorporation of the Company, to
provide by resolution for the issuance of shares of Preferred Stock, in one or
more classes or series, and to fix the rights, preferences, privileges and
restrictions thereof, including dividend rights, conversion rights, voting
rights, terms of redemption, liquidation preferences and the number of shares
constituting any series or the designation of such series. The issuance of
Preferred Stock could have the effect of decreasing the market price of the
Common Stock and could adversely affect the voting and other rights of the
holders of Common Stock.
 
OPTIONS
 
    As of December 23, 1998, (i) options to purchase a total of 17,419,375
shares of Common Stock were outstanding; and (ii) up to 1,680,625 additional
shares of Common Stock may be subject to options granted in the future under the
1997 Omnibus Plan. All of the options contain standard anti-dilution provisions.
See "Management -- Employee Benefit Plans -- Priceline.com Incorporated 1997
Omnibus Plan" and "-- Summary of Compensation."
 
WARRANTS
 
    As of December 23, 1998, the Company had the following outstanding warrants
to purchase shares of Common Stock: (i) a warrant to purchase up to 15,114,883
shares of Common Stock at an exercise price of $1.156862 per share that is held
by Delta; (ii) a warrant to purchase up to 50,000 shares of Common Stock at an
exercise price of $1.00 per share that is held by a high net worth individual;
and (iii) a warrant to purchase up to 100,000 shares of Common Stock in exchange
for services rendered to the Company by a non-employee for an estimated fair
value of approximately $100,000. All of the warrants contain standard
anti-dilution provisions. See "Business -- Strategic Alliances."
 
                                       64
<PAGE>
REGISTRATION RIGHTS
 
    Pursuant to an Amended and Restated Registration Rights Agreement, dated as
of December 8, 1998 (the "Registration Rights Agreement"), among the Major
Stockholders, partnerships affiliated with GAP LLC, Vulcan and certain other
stockholders of the Company have certain registration rights with respect to an
aggregate of 97,958,784 shares of Common Stock (the "Registrable Securities"),
6,212,000 of which are issuable upon the exercise of options. Under the
Registration Rights Agreement, partnerships affiliated with GAP LLC, the Major
Stockholders, Vulcan and one other stockholder each may demand, on one occasion,
that the Company file a registration statement under the Securities Act covering
all or a portion of their Registrable Securities, as well as demand, on an
unlimited number of occasions, that the Company register their Registrable
Securities on a Form S-3. In addition, all of the parties to the Registration
Rights Agreement have certain "piggyback" registration rights. If the Company
proposes to register any of the Common Stock under the Securities Act for its
own account (other than pursuant to this offering or in connection with the
registration of securities issuable (i) under an employee benefits plan or (ii)
in a business combination), each party to the Registration Rights Agreement may
require the Company to include all or a portion of their Registrable Securities
in such registration; PROVIDED, HOWEVER, that the managing underwriter, if any,
of any such offering has certain rights to limit the number of Registrable
Securities proposed to be included in such registration. All registration
expenses incurred in connection with the above registrations will be borne by
the Company.
 
    The Company also is obligated to enter into a registration rights agreement
on substantially the same terms with Delta that covers the 15,114,083 shares of
Common Stock issuable pursuant to the Delta Warrant.
 
TRANSFER AGENT AND REGISTRAR
 
    The Transfer Agent and Registrar for the Company's Common Stock is
          .
 
LISTING
 
    The Company intends to apply for quotation of the Common Stock on the Nasdaq
National Market under the trading symbol "PRLN".
 
                                       65
<PAGE>
                 CERTAIN UNITED STATES FEDERAL TAX CONSEQUENCES
                              TO NON-U.S. HOLDERS
 
    The following is a general summary of certain United States federal income
and estate tax consequences expected to result under current law from the
purchase, ownership and taxable disposition of Common Stock by a person or
entity other than (i) a citizen or resident of the United States, (ii) a
corporation, partnership or other entity created or organized in or under the
laws of the United States or of any state thereof, (iii) an estate, the income
of which is subject to United States federal income taxation regardless of its
source or (iv) a trust, the administration of which is subject to the primary
supervision of a United States court and the control of all of the substantial
decisions of which is within the authority of one or more United States persons
(a "Non-U.S. Holder"). This summary does not address all of the United States
federal income and estate tax considerations that may be relevant to a Non-U.S.
Holder in light of its particular circumstances or to Non-U.S. Holders that may
be subject to special treatment under United States federal income or estate tax
laws. Furthermore, this summary does not discuss any aspects of state, local or
foreign taxation. This summary is based on current provisions of the Code,
Treasury regulations thereunder, judicial opinions, published positions of the
United States Internal Revenue Service (the "IRS") and other applicable
authorities, all of which are subject to change, possibly with retroactive
effect. Each prospective purchaser of Common Stock is advised to consult its tax
advisor with respect to the tax consequences of acquiring, holding and disposing
of Common Stock.
 
DIVIDENDS
 
    Dividends paid to a Non-U.S. Holder of Common Stock generally will be
subject to withholding of United States federal income tax at a 30 percent rate
(or such lower rate as may be specified by an applicable income tax treaty)
unless the dividend is effectively connected with the conduct of a trade or
business of the Non-U.S. Holder within the United States, in which case the
dividend will be taxed at ordinary United States federal income tax rates on a
net income basis. If the Non-U.S. Holder is a corporation, such effectively
connected income may also be subject to an additional "branch profits tax."
 
SALE OR OTHER DISPOSITION OF COMMON STOCK
 
    A Non-U.S. Holder generally will not be subject to United States federal
income tax in respect of any gain recognized on the sale or other disposition of
Common Stock unless: (i) the gain is effectively connected with a trade or
business of the Non-U.S. Holder within the United States; (ii) in the case of a
Non-U.S. Holder who is an individual and holds the Common Stock as a capital
asset, the holder is present in the United States for 183 or more days in the
taxable year of the sale or other disposition and either (a) the individual has
a "tax home" in the United States for United States federal income tax purposes
or (b) the gain is attributable to an office or other fixed place of business
maintained by the individual in the United States; (iii) the Non-U.S. Holder is
subject to tax pursuant to the provisions of United States federal income tax
law applicable to certain United States expatriates; or (iv) the Company is or
has been during certain periods a "United States real property holding
corporation" (a "USRPHC") for United States federal income tax purposes and,
assuming that the Common Stock continues to be "regularly traded on an
established securities market" for United States federal income tax purposes,
the Non-U.S. Holder held, directly or indirectly, at any time during the
five-year period ending on the date of disposition (or, if shorter, the Non-U.S.
Holder's holding period for the Common Stock), more than 5 percent of the
outstanding Common Stock. The Company believes that it will not constitute a
USRPHC immediately after the consummation of the Offering and does not expect to
become a USRPHC; however, no assurance can be given in this regard.
 
BACKUP WITHHOLDING AND INFORMATION REPORTING
 
    United States backup withholding tax generally will not apply to dividends
paid on Common Stock to a Non-U.S. Holder at an address outside the United
States. The Company must report annually to the IRS
 
                                       66
<PAGE>
and to each Non-U.S. Holder the amount of dividends paid to such holder and the
amount, if any, of tax withheld with respect to such dividends. This information
may also be made available to the tax authorities in the Non-U.S. Holder's
country of residence.
 
    Upon the sale or other disposition of Common Stock by a Non-U.S. Holder to
or through a United States office of a broker, the broker must backup withhold
at a rate of 31 percent and report the sale to the IRS, unless the holder
certifies its Non-U.S. Holder status under penalties of perjury or otherwise
establishes an exemption. Upon the sale or other disposition of Common Stock by
a Non-U.S. Holder to or through a foreign office of a United States broker (or a
foreign broker with certain types of relationships with the United States), the
broker must report the sale or other disposition to the IRS (but is not required
to backup withhold) unless the broker has documentary evidence in its files that
the seller is a Non-U.S. Holder and certain other conditions are met, or the
holder otherwise establishes an exemption.
 
    Backup withholding is not an additional tax. Amounts withheld under the
backup withholding rules are generally allowable as a refund or credit against
such Non-U.S. Holder's United States federal income tax liability, if any,
provided, that the required information is furnished to the IRS.
 
    Final United States Treasury regulations, effective for payments made after
December 31, 1999, may affect the procedures to be followed by a Non-U.S. Holder
in establishing such holder's status as a Non-U.S. Holder for purposes of the
withholding, backup withholding and information reporting rules discussed
herein. Prospective investors should consult their tax advisors concerning such
regulations.
 
FEDERAL ESTATE TAXES
 
    Common Stock owned or treated as owned by an individual who is not a citizen
or "resident" (as specially defined for United States federal estate tax
purposes) of the United States at the time of death, will be included in such
individual's gross estate for United States federal estate tax purposes, unless
an applicable estate tax treaty provides otherwise.
 
                                       67
<PAGE>
                        SHARES ELIGIBLE FOR FUTURE SALE
 
    Prior to this offering, there has been no market for the Common Stock, and
there can be no assurance that a significant public market for the Common Stock
will develop or be sustained after this offering. Future sales of substantial
amounts of Common Stock (including shares issued upon exercise of outstanding
options and warrants) in the public market after this offering could adversely
affect market prices prevailing from time to time and could impair the Company's
ability to raise capital through the sale of its equity securities. Sales of
substantial amounts of Common Stock of the Company in the public market could
adversely affect the prevailing market price and the ability of the Company to
raise equity capital in the future.
 
    Upon completion of this offering, the Company will have outstanding   shares
of Common Stock, assuming no exercise of the Underwriters' over-allotment option
and no exercise of outstanding warrants and options, which as of December 23,
1998 were immediately exercisable for an aggregate of 150,000 shares of Common
Stock and exercisable for an additional 34,533,458 shares of Common Stock in the
future. Of these shares, the   shares of Common Stock sold in this offering will
be freely tradable without restriction under the Securities Act unless purchased
by "affiliates" of the Company as that term is defined in Rule 144 under the
Securities Act.
 
    Each of the Company and the directors, executive officers and certain other
stockholders of the Company has agreed that, without the prior written consent
of Morgan Stanley & Co. Incorporated on behalf of the Underwriters, it will not,
during the period ending 180 days after the date of this Prospectus; (i) offer,
pledge, sell, contract to sell, sell any option or contract to purchase,
purchase any option or contract to sell, grant any option, right or warrant to
purchase, lend, file a registration statement (in the case of the Company) or
otherwise transfer or dispose of, directly or indirectly, any shares of Common
Stock or any securities convertible into or exercisable or exchangeable for
Common Stock; (ii) enter into any swap or other arrangement that transfers to
another, in whole or in part, any of the economic consequences of ownership of
the Common Stock, whether any such transaction described in clause (i) or (ii)
above is to be settled by delivery of Common Stock or such other securities, in
cash or otherwise; or (iii) file a registration statement (in the case of the
Company), other than a registration statement on Form S-8 covering shares of
Common Stock subject to outstanding options under the 1997 Omnibus Plan or
shares of Common Stock subject to options to be issued under the 1999 Omnibus
Plan. The restrictions described in this paragraph do not apply to (i) the sale
of the Shares to the Underwriters or (ii) the issuance by the Company of shares
of Common Stock upon the exercise of an option or a warrant or the conversion of
a security outstanding on the date of this Prospectus of which the Underwriters
have been advised in writing or (iii) the sale or other transfer of any shares
of Common Stock by any of the foregoing persons to any affiliate (as such term
is defined in Rule 12b-2 under the Exchange Act) of such person which agrees to
be bound by the foregoing provisions. In addition, the shareholders of the
Company have agreed that, without the prior written consent of Morgan Stanley &
Co. Incorporated on behalf of the Underwriters, neither it nor any of its
affiliates will, during the period ending 180 days after the date of the
Prospectus, make any demand for, or exercise any right with respect to, the
registration of any shares of Common Stock or any security convertible into or
exercisable or exchangeable for Common Stock. Beginning 180 days after the date
of this Prospectus, all     shares will be eligible for sale in the public
market, subject to certain timing, manner of sale and volume limitations
pursuant to Rule 144.
 
    In general, under Rule 144 as currently in effect, beginning 90 days after
the date of this Prospectus, a person (or persons whose shares are aggregated)
who has beneficially owned restricted shares for at least one year (including
the holding period of any prior owner except an affiliate) would be entitled to
sell within any three-month period a number of shares that does not exceed the
greater of (i) 1% of the number of shares of Common Stock then outstanding
(which will equal approximately   shares immediately after this offering) or
(ii) the average weekly trading volume of the Common Stock during the four
calendar weeks preceding the filing of a Form 144 with respect to such sale.
Sales under Rule 144 also are subject to certain manner of sale provisions and
notice requirements and to the availability of current
 
                                       68
<PAGE>
public information about the Company. Under Rule 144(k), a person who is not
deemed to have been an affiliate of the Company at any time during the three
months preceding a sale, and who has beneficially owned the shares proposed to
be sold for at least two years (including the holding period of any prior owner
except an affiliate), is entitled to sell such shares without complying with the
manner of sale, public information, volume limitation or notice provisions of
Rule 144.
 
    Rule 701 permits resales of shares in reliance upon Rule 144 but without
compliance with certain restrictions of Rule 144. Any employee, officer or
director of or consultant to the Company who purchased his or her shares
pursuant to a written compensatory plan or contract may be entitled to rely on
the resale provisions of Rule 701. Rule 701 permits affiliates to sell their
Rule 701 shares under Rule 144 without complying with the holding period
requirements of Rule 144. Rule 701 further provides that non-affiliates may sell
such shares in reliance on Rule 144 without having to comply with the holding
period, public information, volume limitation or notice provisions of Rule 144.
All holders of Rule 701 shares are required to wait until 90 days after the date
of this Prospectus before selling such shares.
 
    Following consummation of this offering, the Company intends to file a
registration statement on Form S-8 under the Securities Act covering shares of
Common Stock subject to outstanding options under the 1997 Omnibus Plan and 7.5
million shares of Common Stock reserved for issuance under the 1999 Omnibus
Plan. Based on the number of shares subject to outstanding options at December
23, 1998 and currently reserved for issuance under such plan, such registration
statement would cover approximately 17,419,375 shares issuable on exercise of
the options of which 8,322,792 options have vested as of such date. Such
registration statement will automatically become effective upon filing.
Accordingly, subject to the exercise of such options, shares registered under
such registration statement will be available for sale in the open market
immediately after the 180-day lock-up agreements expire. Also beginning 90 days
after the date of this offering, certain holders of shares of Common Stock will
be entitled to certain rights with respect to registration of such shares of
Common Stock for offer and sale to the public. However, under certain lock-up
agreements with the Underwriters, such rights will not be able to be exercised
until 180 days after the date of this Prospectus. See "Description of Capital
Stock--Registration Rights."
 
                                       69
<PAGE>
                                  UNDERWRITERS
 
    Under the terms and subject to the conditions contained in an Underwriting
Agreement dated             1999 (the "Underwriting Agreement"), the U.S.
Underwriters named below for whom Morgan Stanley & Co. Incorporated is acting as
U.S. Representative, and the International Underwriters named below for whom
Morgan Stanley & Co. International Limited is acting as International
Representative, have severally agreed to purchase, and the Company has agreed to
sell to them, severally, the respective number of shares of Common Stock set
forth opposite the names of such Underwriters below:
 
<TABLE>
<CAPTION>
                                                                                                         NUMBER OF
NAME                                                                                                      SHARES
- ------------------------------------------------------------------------------------------------------  -----------
<S>                                                                                                     <C>
U.S. Underwriters:
  Morgan Stanley & Co. Incorporated...................................................................
  Merrill Lynch, Pierce, Fenner & Smith
            Incorporated..............................................................................
  BancBoston Robertson Stephens Inc. .................................................................
  Donaldson, Lufkin & Jenrette Securities Corporation.................................................
                                                                                                        -----------
      Subtotal........................................................................................
                                                                                                        -----------
                                                                                                        -----------
International Underwriters:
  Morgan Stanley & Co. International Limited..........................................................
  Merrill Lynch International.........................................................................
  BancBoston Robertson Stephens Inc. .................................................................
  Donaldson, Lufkin & Jenrette International..........................................................
                                                                                                        -----------
      Subtotal........................................................................................
                                                                                                        -----------
        Total.........................................................................................
                                                                                                        -----------
                                                                                                        -----------
</TABLE>
 
    The U.S. Underwriters and the International Underwriters, and the U.S.
Representative and the International Representative, are collectively referred
to as the "Underwriters" and the "Representatives," respectively. The
Underwriters are offering the shares of Common Stock subject to their acceptance
of the shares from the Company and subject to prior sale. The Underwriting
Agreement provides that the obligations of the several Underwriters to pay for
and accept delivery of the shares of Common Stock offered hereby are subject to
the approval of certain legal matters by their counsel and to certain other
conditions. The Underwriters are obligated to take and pay for all of the shares
of Common Stock offered hereby (other than those covered by the U.S.
Underwriters' over-allotment option described below) if any are taken.
 
    Pursuant to the Agreement between U.S. and International Underwriters, each
U.S. Underwriter has represented and agreed that, with certain exceptions: (i)
it is not purchasing any Shares (as defined herein) for the account of anyone
other than a United States or Canadian Person (as defined herein); and (ii) it
has not offered or sold, and will not offer or sell, directly or indirectly, any
Shares or distribute any Prospectus relating to the Shares outside the United
States or Canada or to anyone other than a United States or Canadian Person.
Pursuant to the Agreement between U.S. and International Underwriters, each
International Underwriter has represented and agreed that, with certain
exceptions: (i) it is not purchasing any Shares for the account of any United
States or Canadian Person; and (ii) it has not offered or sold, and will not
offer or sell, directly or indirectly, any Shares or distribute any Prospectus
relating to the Shares in the United States or Canada or to any United States or
Canadian Person. With respect to any Underwriter that is a U.S. Underwriter and
an International Underwriter, the foregoing representations and agreements (i)
made by it in its capacity as a U.S. Underwriter apply only to it in its
capacity as a U.S. Underwriter; and (ii) made by it in its capacity as an
International Underwriter apply only to it in its
 
                                       70
<PAGE>
capacity as an International Underwriter. The foregoing limitations do not apply
to stabilization transactions or to certain other transactions specified in the
Agreement between U.S. and International Underwriters. As used herein, "United
States or Canadian Person" means any national or resident of the United States
or Canada, or any corporation, pension, profit-sharing or other trust or other
entity organized under the laws of the United States or Canada or of any
political subdivision thereof (other than a branch located outside the United
States and Canada of any United States or Canadian Person), and includes any
United States or Canadian branch of a person who is otherwise not a United
States or Canadian Person. All shares of Common Stock to be purchased by the
Underwriters under the Underwriting Agreement are referred to herein as the
"Shares."
 
    Pursuant to the Agreement between U.S. and International Underwriters, sales
may be made between the U.S. Underwriters and International Underwriters of any
number of Shares as may be mutually agreed. The per share price of any Shares so
sold shall be the public offering price set forth on the cover page hereof, in
United States dollars, less an amount not greater than the per share amount of
the concession to dealers set forth below.
 
    Pursuant to the Agreement between U.S. and International Underwriters, each
U.S. Underwriter has represented that it has not offered or sold, and has agreed
not to offer or sell, any Shares, directly or indirectly, in any province or
territory of Canada or to, or for the benefit of, any resident of any province
or territory of Canada in contravention of the securities laws thereof and has
represented that any offer or sale of Shares in Canada will be made only
pursuant to an exemption from the requirement to file a Prospectus in the
province or territory of Canada in which such offer or sale is made. Each U.S.
Underwriter has further agreed to send to any dealer who purchases from it any
of the Shares a notice stating in substance that, by purchasing such Shares,
such dealer represents and agrees that it has not offered or sold, and will not
offer or sell, directly or indirectly, any of such Shares in any province or
territory of Canada or to, or for the benefit of, any resident of any province
or territory of Canada in contravention of the securities laws thereof and that
any offer or sale of Shares in Canada will be made only pursuant to an exemption
from the requirement to file a Prospectus in the province or territory of Canada
in which such offer or sale is made, and that such dealer will deliver to any
other dealer to whom it sells any of such Shares a notice containing
substantially the same statement as is contained in this sentence.
 
    Pursuant to the Agreement between U.S. and International Underwriters, each
International Underwriter has represented and agreed that (i) it has not offered
or sold and, prior to the date six months after the closing date for the sale of
the Shares to the International Underwriters, will not offer or sell, any Shares
to persons in the United Kingdom except to persons whose ordinary activities
involve them in acquiring, holding, managing or disposing of investments (as
principal or agent) for the purposes of their businesses or otherwise in
circumstances, which have not resulted and will not result in an offer to the
public in the United Kingdom within the meaning of the Public Offers of
Securities Regulations 1995; (ii) it has complied and will comply with all
applicable provisions of the Financial Services Act 1986 with respect to
anything done by it in relation to the Shares in, from or otherwise involving
the United Kingdom; and (iii) it has only issued or passed on and will only
issue or pass on in the United Kingdom any document received by it in connection
with the offering of the Shares to a person who is of a kind described in
Article 11(3) of the Financial Services Act 1986 (Investment Advertisements)
(Exemptions) Order 1996 (as amended) or is a person to whom such document may
otherwise lawfully be issued or passed on.
 
    Pursuant to the Agreement between U.S. and International Underwriters, each
International Underwriter has further represented that it has not offered or
sold, and has agreed not to offer or sell, directly or indirectly, in Japan or
to or for the account of any resident thereof, any of the Shares acquired in
connection with the distribution contemplated hereby, except for offers or sales
to Japanese International Underwriters or dealers and except pursuant to any
exemption from the registration requirements of the Securities and Exchange Law
and otherwise in compliance with applicable provisions of Japanese law.
 
                                       71
<PAGE>
Each International Underwriter has further agreed to send to any dealer who
purchases from it any of the Shares a notice stating in substance that, by
purchasing such Shares, such dealer represents and agrees that it has not
offered or sold, and will not offer or sell, any of such Shares, directly or
indirectly, in Japan or to or for the account of any resident thereof except for
offers or sales to Japanese International Underwriters or dealers and except
pursuant to any exemption from the registration requirements of the Securities
and Exchange Law and otherwise in compliance with applicable provisions of
Japanese law, and that such dealer will send to any other dealer to whom it
sells any of such Shares a notice containing substantially the same statement as
is contained in this sentence.
 
    The Underwriters initially propose to offer part of the shares of Common
Stock directly to the public at the public offering price set forth on the cover
page hereof and part to certain dealers at a price that represents a concession
not in excess of $   a share under the public offering price. Any Underwriter
may allow, and such dealers may reallow, a concession not in excess of $   a
share to other Underwriters or to certain other dealers. After the initial
offering of the shares of Common Stock, the offering price and other selling
terms may from time to time be varied by the Representative.
 
    The Company has granted to the U.S. Underwriters an option, exercisable for
30 days from the date of this Prospectus, to purchase up to an aggregate of
            additional shares of Common Stock at the public offering price set
forth on the cover page hereof, less underwriting discounts and commissions. The
U.S. Underwriters may exercise such option solely for the purpose of covering
over-allotments, if any, made in connection with the offering of the shares of
Common Stock offered hereby. To the extent such option is exercised, each U.S.
Underwriter will become obligated, subject to certain conditions, to purchase
approximately the same percentage of such additional shares of Common Stock as
the number set forth next to such U.S. Underwriter's name in the preceding table
bears to the total number of shares of Common Stock set forth next to the names
of all U.S. Underwriters in the preceding table. If the U.S. Underwriters
exercise the over-allotment option in full, the total public offering price will
be $      , the total underwriting discounts and commissions will be $      and
the total proceeds to the Company will be $      .
 
    The Underwriters have informed the Company that they do not intend sales to
discretionary accounts to exceed five percent of the total number of shares of
Common Stock offered by them.
 
    At the request of the Company, the Underwriters have reserved up to
shares of Common Stock offered hereby for sale at the initial public offering
price to certain employees of the Company and to certain other persons. The
number of shares available for sale to the general public will be reduced to the
extent that such persons purchase such reserved shares. Any reserved shares not
so purchased will be offered by the Underwriters to the general public on the
same basis as the other shares of Common Stock offered hereby.
 
    The Company has applied for quotation of the Common Stock on the Nasdaq
National Market under the symbol "PRLN."
 
    Each of the Company and the directors, executive officers and certain other
stockholders of the Company has agreed that, without the prior written consent
of Morgan Stanley & Co. Incorporated on behalf of the Underwriters, it will not,
during the period ending 180 days after the date of this Prospectus; (i) offer,
pledge, sell, contract to sell, sell any option or contract to purchase,
purchase any option or contract to sell, grant any option, right or warrant to
purchase, lend, file a registration statement (in the case of the Company) or
otherwise transfer or dispose of, directly or indirectly, any shares of Common
Stock or any securities convertible into or exercisable or exchangeable for
Common Stock; (ii) enter into any swap or other arrangement that transfers to
another, in whole or in part, any of the economic consequences of ownership of
the Common Stock, whether any such transaction described in clause (i) or (ii)
above is to be settled by delivery of Common Stock or such other securities, in
cash or otherwise; or (iii) file a registration statement (in the case of the
Company), other than a registration statement on Form S-8 covering shares of
Common Stock subject to outstanding options under the 1997 Omnibus Plan
 
                                       72
<PAGE>
or shares of Common Stock subject to options, to be issued under the 1999
Omnibus Plan. The restrictions described in this paragraph do not apply to (i)
the sale of the Shares to the Underwriters or (ii) the issuance by the Company
of shares of Common Stock upon the exercise of an option or a warrant or the
conversion of a security outstanding on the date of this Prospectus of which the
Underwriters have been advised in writing or (iii) the sale or other transfer of
any shares of Common Stock by any of the foregoing persons to any affiliate (as
such term is defined in Rule 12b-2 under the Exchange Act) of such person which
agrees to be bound by the foregoing provisions. In addition, the stockholders of
the Company have agreed that, without the prior written consent of Morgan
Stanley & Co. Incorporated on behalf of the Underwriters, neither it nor any of
its affiliates will, during the period ending 180 days after the date of the
Prospectus, make any demand for, or exercise any right with respect to, the
registration of any shares of Common Stock or any security convertible into or
exercisable or exchangeable for Common Stock.
 
    In order to facilitate the offering of the Common Stock, the Underwriters
may engage in transactions that stabilize, maintain or otherwise affect the
price of the Common Stock. Specifically, the Underwriters may over-allot in
connection with the offering, creating a short position in the Common Stock for
their own account. In addition, to cover over-allotments or to stabilize the
price of the Common Stock, the Underwriters may bid for, and purchase, shares of
Common Stock in the open market. Finally, the underwriting syndicate may reclaim
selling concessions allowed to an Underwriter or a dealer for distributing the
Common Stock in the offering, if the syndicate repurchases previously
distributed Common Stock in transactions to cover syndicate short positions, in
stabilization transactions or otherwise. Any of these activities may stabilize
or maintain the market price of the Common Stock above independent market
levels. The Underwriters are not required to engage in these activities, and may
end any of these activities at any time.
 
    The Company and the Underwriters have agreed to indemnify each other against
certain liabilities, including liabilities under the Securities Act.
 
PRICING OF THE OFFERING
 
    Prior to this offering, there has been no public market for the Common
Stock. The initial public offering price will be determined by negotiations
between the Company and the U.S. Representative. Among the factors to be
considered in determining the initial public offering price will be the future
prospects of the Company and its industry in general, sales, earnings and
certain other financial and operating information of the Company in recent
periods, and the price-earnings ratios, price-sales ratios, market prices of
securities and certain financial and operating information of companies engaged
in activities similar to those of the Company. The estimated initial public
offering price range set forth on the cover page of this Prospectus is subject
to change as a result of market conditions and other factors.
 
                                 LEGAL MATTERS
 
    The validity of the issuance of the shares of Common Stock offered hereby
will be passed upon for the Company by Skadden, Arps, Slate, Meagher & Flom LLP
and for the Underwriters by Davis Polk & Wardwell.
 
                                    EXPERTS
 
    The combined financial statements of priceline.com and Priceline Travel as
of September 30, 1998 and December 31, 1997 and for the nine months ended
September 30, 1998 and for the period July 18, 1997 (Inception) to December 31,
1997 included in this Prospectus have been audited by Deloitte & Touche LLP,
independent auditors, as stated in their report appearing herein and have been
so included in reliance upon the report of such firm given upon their authority
as experts in accounting and auditing.
 
                                       73
<PAGE>
                             ADDITIONAL INFORMATION
 
    The Company has filed with the Securities and Exchange Commission (the
"Commission") a Registration Statement on Form S-1 under the Securities Act with
respect to the shares of Common Stock offered hereby. This Prospectus does not
contain all of the information set forth in the Registration Statement and the
exhibits thereto. For further information with respect to the Company and the
Common Stock offered hereby, reference is made to the Registration Statement and
the exhibits thereto. Statements contained in this Prospectus regarding the
contents of any contract or any other document to which reference is made are
not necessarily complete, and, in each instance where a copy of such contract or
other document has been filed as an exhibit to the Registration Statement,
reference is made to the copy so filed, each such statement being qualified in
all respects by such reference. A copy of the Registration Statement and the
exhibits thereto may be inspected without charge at the offices of the
Commission at Judiciary Plaza, 450 Fifth Street, Washington, D.C. 20549, and
copies of all or any part of the Registration Statement may be obtained from the
Public Reference Section of the Commission, Washington, D.C. 20549 upon the
payment of the fees prescribed by the Commission. The Commission maintains a Web
site (http://www.sec.gov) that contains reports, proxy and information
statements and other information regarding registrants, such as the Company,
that file electronically with the Commission.
 
    The Company intends to provide its stockholders with annual reports
containing combined financial statements audited by an independent accounting
firm and quarterly reports containing unaudited combined financial data for the
first three quarters of each year.
 
                                       74
<PAGE>
                         INDEX TO FINANCIAL STATEMENTS
 
<TABLE>
<CAPTION>
                                                                                                                PAGE
                                                                                                                -----
<S>                                                                                                          <C>
INDEPENDENT AUDITORS' REPORT...............................................................................         F-2
 
COMBINED FINANCIAL STATEMENTS AS OF SEPTEMBER 30, 1998 AND DECEMBER 31, 1997 AND FOR THE NINE MONTHS ENDED
  SEPTEMBER 30, 1998 AND THE PERIOD JULY 18, 1997 (INCEPTION) TO DECEMBER 31, 1997:
  Combined Balance Sheets..................................................................................         F-3
 
  Combined Statements of Operations........................................................................         F-4
 
  Combined Statements of Changes in Stockholders' Equity...................................................         F-5
 
  Combined Statements of Cash Flows........................................................................         F-6
 
  Notes to Combined Financial Statements...................................................................         F-7
</TABLE>
 
                                      F-1
<PAGE>
                          INDEPENDENT AUDITORS' REPORT
 
The Board of Directors and Stockholders of
priceline.com Incorporated and Priceline Travel, Inc.
 
    We have audited the accompanying combined balance sheets of priceline.com
Incorporated and Priceline Travel, Inc. (collectively the "Company") as of
September 30, 1998 and December 31, 1997 and the related combined statements of
operations, changes in stockholders' equity and cash flows for the nine months
ended September 30, 1998 and for the period July 18, 1997 (Inception) to
December 31, 1997. These combined financial statements are the responsibility of
the Company's management. Our responsibility is to express an opinion on these
combined financial statements based on our audits.
 
    We conducted our audits in accordance with generally accepted auditing
standards. Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the combined financial statements are free of
material misstatement. An audit includes examining, on a test basis, evidence
supporting the amounts and disclosures in the combined financial statements. An
audit also includes assessing the accounting principles used and significant
estimates made by management, as well as evaluating the overall financial
statement presentation. We believe that our audits provide a reasonable basis
for our opinion.
 
    In our opinion, such combined financial statements present fairly, in all
material respects, the financial position of the Company as of September 30,
1998 and December 31, 1997 and the results of its operations and its cash flows
for the nine months ended September 30, 1998 and the period July 18, 1997 to
December 31, 1997 in conformity with generally accepted accounting principles.
 
/s/ Deloitte & Touche LLP
Stamford, Connecticut
 
December 21, 1998
 
                                      F-2
<PAGE>
             PRICELINE.COM INCORPORATED AND PRICELINE TRAVEL, INC.
 
                            COMBINED BALANCE SHEETS
 
                 AS OF SEPTEMBER 30, 1998 AND DECEMBER 31, 1997
 
<TABLE>
<CAPTION>
                                                                                     SEPTEMBER 30,   DECEMBER 31,
                                                                                          1998           1997
                                                                                     --------------  -------------
<S>                                                                                  <C>             <C>
ASSETS
CURRENT ASSETS:
Cash and cash equivalents..........................................................  $   10,081,313  $      16,459
Restricted bank deposit............................................................         505,715       --
Accounts receivable, net of allowance for uncollectible accounts of $52,281 at
  September 30, 1998...............................................................       2,056,553       --
Note receivable from stockholders..................................................         500,000        250,000
Prepaid expenses and other current assets..........................................         876,816       --
                                                                                     --------------  -------------
    Total current assets...........................................................      14,020,397        266,459
PROPERTY AND EQUIPMENT--Net........................................................       5,468,855      1,180,119
RESTRICTED BANK CERTIFICATE OF DEPOSIT.............................................         168,750       --
OTHER ASSETS.......................................................................          22,714          2,686
                                                                                     --------------  -------------
TOTAL ASSETS.......................................................................  $   19,680,716  $   1,449,264
                                                                                     --------------  -------------
                                                                                     --------------  -------------
LIABILITIES AND STOCKHOLDERS' EQUITY
CURRENT LIABILITIES:
Accounts payable...................................................................  $    2,869,297  $     899,052
Related party payable..............................................................         285,976      1,104,391
Accrued professional fees..........................................................         744,517        266,614
Accrued marketing fees.............................................................         409,587       --
Accrued telecommunications expense.................................................         382,239         24,354
Other accrued expenses.............................................................         255,728         36,595
Current portion of capital lease obligations.......................................          24,212         21,906
Other current liabilities..........................................................         534,081        302,363
                                                                                     --------------  -------------
    Total current liabilities......................................................       5,505,637      2,655,275
LONG-TERM DEBT--net................................................................         989,396       --
CAPITAL LEASE OBLIGATIONS--net of current portion..................................          32,649         51,108
                                                                                     --------------  -------------
    Total liabilities..............................................................       6,527,682      2,706,383
COMMITMENTS AND CONTINGENCIES (Note 10)
STOCKHOLDERS' EQUITY (DEFICIENCY)
Common stock.......................................................................         747,099        416,358
Preferred Stock....................................................................         172,887       --
Additional paid-in capital.........................................................      53,285,081        840,005
Accumulated deficit................................................................     (41,052,033)    (2,513,482)
                                                                                     --------------  -------------
     Total stockholders' equity (deficiency).......................................      13,153,034     (1,257,119)
                                                                                     --------------  -------------
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY.........................................  $   19,680,716  $   1,449,264
                                                                                     --------------  -------------
                                                                                     --------------  -------------
</TABLE>
 
                  See notes to combined financial statements.
 
                                      F-3
<PAGE>
             PRICELINE.COM INCORPORATED AND PRICELINE TRAVEL, INC.
 
                       COMBINED STATEMENTS OF OPERATIONS
 
              FOR THE NINE MONTHS ENDED SEPTEMBER 30, 1998 AND THE
             PERIOD JULY 18, 1997 (INCEPTION) TO DECEMBER 31, 1997
 
<TABLE>
<CAPTION>
                                                                            NINE MONTHS        JULY 18, 1997
                                                                               ENDED            (INCEPTION)
                                                                           SEPTEMBER 30,      TO DECEMBER 31,
                                                                                1998                1997
                                                                           --------------  ----------------------
<S>                                                                        <C>             <C>
Revenues.................................................................  $   16,243,733      $           --
Cost of revenues.........................................................      16,793,797                  --
                                                                           --------------         -----------
      Gross profit (loss)................................................        (550,064)                 --
Expenses:
  Sales and marketing....................................................      15,925,101             441,479
  General and adminstrative..............................................      14,198,661           1,011,600
  Systems and business development.......................................       8,168,984           1,060,091
                                                                           --------------         -----------
      Total expenses.....................................................      38,292,746           2,513,170
                                                                           --------------         -----------
Operating loss...........................................................     (38,842,810)         (2,513,170)
Interest income (expense), net...........................................         304,259                (312)
                                                                           --------------         -----------
Net income (loss)........................................................  $  (38,538,551)     $   (2,513,482)
                                                                           --------------         -----------
                                                                           --------------         -----------
Net loss per common share................................................  $        (0.62)     $        (0.06)
                                                                           --------------         -----------
                                                                           --------------         -----------
Weighted average common shares outstanding...............................      61,767,845          40,667,005
</TABLE>
 
                  See notes to combined financial statements.
 
                                      F-4
<PAGE>
             PRICELINE.COM INCORPORATED AND PRICELINE TRAVEL, INC.
             COMBINED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY
              FOR THE NINE MONTHS ENDED SEPTEMBER 30, 1998 AND THE
             PERIOD JULY 18, 1997 (INCEPTION) TO DECEMBER 31, 1997
<TABLE>
<CAPTION>
                                         PRICELINE.COM INCORPORATED                       PRICELINE TRAVEL, INC.
                           ------------------------------------------------------  -------------------------------------
<S>                        <C>        <C>        <C>        <C>        <C>         <C>          <C>          <C>
                           SERIES A CONVERTIBLE
                             PREFERRED STOCK         COMMON STOCK      ADDITIONAL        COMMON STOCK        ADDITIONAL
                           --------------------  --------------------   PAID-IN    ------------------------    PAID-IN
                            SHARES     AMOUNT     SHARES     AMOUNT     CAPITAL      SHARES       AMOUNT       CAPITAL
                           ---------  ---------  ---------  ---------  ----------  -----------  -----------  -----------
Issuance of common stock
  and common stock
  subscriptions..........         --         --  41,335,776 $ 413,358  $  836,642       3,000    $   3,000    $   3,363
Net loss.................         --         --         --         --          --          --           --           --
                           ---------  ---------  ---------  ---------  ----------       -----   -----------  -----------
Balance, December 31,
  1997...................         --         --  41,335,776   413,358     836,642       3,000        3,000        3,363
Issuance of common stock
  and common stock
  subscriptions..........         --         --  33,074,126   330,741  32,289,623          --           --           --
Issuance of Series A
  convertible preferred
  stock..................  17,288,684 $ 172,887         --         --  19,827,113          --           --           --
Issuance of options to
  purchase common stock..         --         --         --         --     215,545          --           --           --
Issuance of warrants to
  purchase common stock..         --         --         --         --     112,795          --           --           --
Net loss.................         --         --         --         --          --          --           --           --
                           ---------  ---------  ---------  ---------  ----------       -----   -----------  -----------
Balance, September 30,
  1998...................  17,288,684 $ 172,887  74,409,902 $ 744,099  $53,281,718      3,000    $   3,000    $   3,363
                           ---------  ---------  ---------  ---------  ----------       -----   -----------  -----------
                           ---------  ---------  ---------  ---------  ----------       -----   -----------  -----------
 
<CAPTION>
                                   COMBINED
                           -------------------------
<S>                        <C>           <C>
 
                           ACCUMULATED
                             DEFICIT        TOTAL
                           ------------  -----------
Issuance of common stock
  and common stock
  subscriptions..........           --   $ 1,256,363
Net loss.................   $(2,513,482)  (2,513,482)
                           ------------  -----------
Balance, December 31,
  1997...................   (2,513,482)   (1,257,119)
Issuance of common stock
  and common stock
  subscriptions..........           --    32,620,364
Issuance of Series A
  convertible preferred
  stock..................           --    20,000,000
Issuance of options to
  purchase common stock..           --       215,545
Issuance of warrants to
  purchase common stock..           --       112,795
Net loss.................  (38,538,551)  (38,538,551)
                           ------------  -----------
Balance, September 30,
  1998...................  ($41,052,033) $13,153,034
                           ------------  -----------
                           ------------  -----------
</TABLE>
 
                  See notes to combined financial statements.
 
                                      F-5
<PAGE>
             PRICELINE.COM INCORPORATED AND PRICELINE TRAVEL, INC.
 
                       COMBINED STATEMENTS OF CASH FLOWS
 
          FOR THE NINE MONTHS ENDED SEPTEMBER 30, 1998 AND THE PERIOD
                 JULY 18, 1997 (INCEPTION) TO DECEMBER 31, 1997
 
<TABLE>
<CAPTION>
                                                                                               JULY 18, 1997
                                                                          NINE MONTHS           (INCEPTION)
                                                                      ENDED SEPTEMBER 30,     TO DECEMBER 31,
                                                                             1998                   1997
                                                                      -------------------  ----------------------
<S>                                                                   <C>                  <C>
OPERATING ACTIVITIES:
  Net loss..........................................................    $   (38,538,551)       $   (2,513,482)
  Adjustments to reconcile net loss to net cash provided by (used
    in) operating activities:
    Depreciation and amortization...................................          1,626,427               211,996
    Provision for uncollectible accounts............................            168,002                    --
    Equity based compensation.......................................          6,815,517                    --
    Changes in assets and liabilities:
      Accounts receivable...........................................         (2,224,555)                   --
      Prepaid expenses and other current assets.....................           (876,816)                   --
      Restricted bank deposit and bank certificate of deposit.......           (674,465)                   --
      Accounts payable and accrued expenses.........................          3,434,753             1,226,615
      Other.........................................................            213,909               299,677
                                                                      -------------------         -----------
        Net cash provided by (used in) operating activities.........        (30,055,779)             (775,194)
INVESTING ACTIVITIES--Additions to property and equipment...........         (5,915,163)           (1,317,404)
FINANCING ACTIVITIES:
  Related party payable.............................................           (818,415)            1,104,391
  Issuance of long-term debt........................................          1,000,000                    --
  Principal payments under capital lease obligations................            (16,153)               (1,697)
  Issuance of common stock and subscription units...................         25,620,364             1,006,363
  Payment received on stockholder's notes...........................            250,000                    --
  Issuance of Series A convertible preferred stock..................         20,000,000                    --
                                                                      -------------------         -----------
  Net cash provided by financing activities.........................         46,035,796             2,109,057
NET INCREASE IN CASH AND CASH EQUIVALENTS...........................         10,064,854                16,459
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD......................             16,459                    --
                                                                      -------------------         -----------
CASH AND CASH EQUIVALENTS, END OF PERIOD............................    $    10,081,313        $       16,459
                                                                      -------------------         -----------
                                                                      -------------------         -----------
SUPPLEMENTAL CASH FLOW INFORMATION:
  Capital lease obligations.........................................    $            --        $       74,711
  Cash paid during the year for interest............................             40,717                   836
</TABLE>
 
                  See notes to combined financial statements.
 
                                      F-6
<PAGE>
             PRICELINE.COM INCORPORATED AND PRICELINE TRAVEL, INC.
 
                     NOTES TO COMBINED FINANCIAL STATEMENTS
 
1. BUSINESS DESCRIPTION
 
    Priceline.com Incorporated ("priceline.com") has pioneered a unique new type
of e-commerce known as a "demand collection system" that enables consumers to
use the Internet to save money on a wide range of products and services while
enabling sellers to generate incremental revenue. Using a simple and compelling
consumer proposition--"name your price," priceline.com collects consumer demand
(in the form of individual customer offers guaranteed by a credit card) for a
particular product or service at a price set by the customer and communicates
that demand directly to participating sellers or to their private databases.
Consumers agree to hold their offers open for a specified period of time to
enable priceline.com to fulfill their offers from inventory provided by
participating sellers. Once fulfilled, offers generally cannot be canceled.
Priceline.com commenced its service on April 6, 1998 with the sale of leisure
airline tickets. Priceline.com's services were expanded to include the sale of
new automobiles, on a test basis, in July 1998 and hotel room reservations in
October 1998.
 
    Priceline.com was founded as a limited liability company ("LLC") in July
1997 and converted to a corporation in July 1998. All LLC units and options and
warrants to purchase units, were converted in July 1998 to common stock of
priceline.com ("Common Stock") and options and warrants to purchase Common
Stock. For presentation purposes all such LLC units, and options and warrants to
purchase units are presented as Common Stock or options and warrants to purchase
Common Stock. Priceline Travel, Inc. ("Priceline Travel") holds the travel
agency license used to effect airline ticket sales. Priceline Travel is wholly
owned by the founding stockholder and Vice-Chairman of priceline.com.
Priceline.com and Priceline Travel are entities under common control,
accordingly, the financial statement of the two companies are presented on a
combined basis. Priceline Travel will merge into priceline.com during the first
quarter of 1999. Priceline.com and Priceline Travel are referred to collectively
as the Company.
 
    Walker Digital Corporation ("Walker Digital"), a research and development
company, developed the priceline.com service and the business model and related
intellectual property rights underlying the priceline.com service, the rights
for which have been transferred to the Company. Walker Digital was founded and
is controlled by the founding stockholder and Vice Chairman of priceline.com.
Walker Digital has also been providing the Company with a variety of services
including subleasing office facilities to the Company on a month to month basis.
Charges to the Company for such services aggregated $547,515 and $19,813 during
the period ended September 30, 1998 and for the period July 18, 1997 to December
31, 1997, respectively. Such amounts are included in general and administrative
expense. In addition, the Company charged Walker Digital $274,367 and $95,874
for the period ended September 30, 1998 and for the period July 18, 1997 to
December 31, 1997, respectively for shared expenses borne by the Company. Such
reimbursement has been offset against general and administrative expenses in the
accompanying combined statements of operations. Several of the Company's
executive officers and other key employees are also officers, employees and/or
stockholders of Walker Digital.
 
2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
 
    PRINCIPLES OF COMBINATION AND BASIS OF PRESENTATION--The combined financial
statements for all periods presented include the financial statements of
priceline.com and Priceline Travel. The combined financial statements have been
prepared in accordance with generally accepted accounting principles. All
significant intercompany transactions have been eliminated.
 
    USE OF ESTIMATES--The preparation of financial statements in conformity with
generally accepted accounting principles requires management to make estimates
and assumptions that affect the reported amounts of assets and liabilities, and
disclosure of contingent assets and liabilities at the date of the
 
                                      F-7
<PAGE>
             PRICELINE.COM INCORPORATED AND PRICELINE TRAVEL, INC.
 
               NOTES TO COMBINED FINANCIAL STATEMENTS (CONTINUED)
 
2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)
financial statements and reported amount of revenues and expenses during the
reporting period. Actual results could differ from those estimates.
 
    FAIR VALUE OF FINANCIAL INSTRUMENTS--The Company's financial instruments,
including cash and cash equivalents, restricted bank deposits, accounts
receivable-net and accounts payable, are carried at cost, which approximates
their fair value because of the short-term maturity of these financial
instruments. The carrying value of the capital lease obligations and long-term
debt approximates fair value because the interest rates on these obligations are
comparable to the interest rates that could be obtained currently.
 
    CASH AND CASH EQUIVALENTS, RESTRICTED BANK DEPOSITS--The Company invests
excess cash primarily in money market accounts and certificates of deposit. All
highly liquid instruments with an original maturity of three months or less are
considered cash equivalents. Restricted bank deposits collateralize letters of
credit issued in favor of certain airlines.
 
    NOTES RECEIVABLE FROM STOCKHOLDERS--Represents notes receivable related to
the sale of Common Stock that were subsequently paid as follows--$250,000 on
January 9, 1998, and $500,000 on October 13, 1998.
 
    PROPERTY AND EQUIPMENT--Property and equipment are stated at historical
cost. Depreciation and amortization of property and equipment is computed on a
straight-line basis, generally over the estimated useful lives of the assets or,
when applicable, the life of the lease, whichever is shorter. Capitalized
software costs represent costs paid to third parties and are amortized on a
straight-line basis over their estimated useful lives. Maintenance and repairs
are charged directly to expense as incurred.
 
    INTANGIBLE ASSETS--During the initial stages of its development,
priceline.com acquired certain patent rights covering the core buyer-driven
commerce system and the method and system for pricing and selling airline ticket
options in exchange for 5,516,667 shares of common stock. The rights were
obtained from a Walker Digital affiliate. Since the transfer was between
entities under common control, it was recorded at the affiliate's historical
cost of the asset transferred, which was zero.
 
    IMPAIRMENT OF LONG-LIVED ASSETS--The Company evaluates the recoverability of
its long-lived assets in accordance with Statement of Financial Accounting
Standards ("SFAS") No. 121, "Accounting for the Impairment of Long-Lived Assets
and for Long-Lived Assets to be Disposed of." SFAS No. 121 requires recognition
of impairment of long-lived assets in the event the net book value of such
assets exceeds the future undiscounted cash flows attributable to such assets.
 
    REVENUE RECOGNITION--The Company recognizes revenue differently depending on
the nature of the transaction. In the case of airline tickets, priceline.com is
the merchant of record and, accordingly, records as revenue the amount it
collects from the customer, net of the federal air transportation tax, segment
fees and passenger facility charges imposed in connection with the sale of
airline tickets (collectively "Transportation Taxes and Fees"). The Company
records as cost of revenues the amount paid to the airlines, net of
Transportation Taxes and Fees. In the case of new cars, where the Company acts
as the intermediary between the buyer and the seller, and in adaptive marketing
programs, where the Company is paid a fee by third parties in connection with
customer acquisition programs, the Company records as revenue only the fee or
other third party payment that it receives in connection with the transaction,
and not the value of the underlying sale. Approximately $700,000 of total
revenues are attributable to adaptive marketing programs for the nine months
ended September 30, 1998.
 
    SALES AND MARKETING--Sales and marketing expenses are comprised primarily of
costs of radio and newspaper advertising, costs of the third-party offer-taking
call center, credit card merchant fees, and
 
                                      F-8
<PAGE>
             PRICELINE.COM INCORPORATED AND PRICELINE TRAVEL, INC.
 
               NOTES TO COMBINED FINANCIAL STATEMENTS (CONTINUED)
 
2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)
compensation for the Company's sales and marketing personnel. Advertising costs
are expensed as incurred.
 
    SYSTEMS AND BUSINESS DEVELOPMENT COSTS--Systems and business development
expenses are comprised primarily of compensation to the Company's information
technology and product development staff, payments to outside contractors, data
communications and other expenses associated with operating priceline.com's Web
site, depreciation on computer hardware and licensing fees for computer
software. Such costs are expensed as incurred.
 
    INTEREST INCOME (EXPENSE), NET--Interest income (expense) includes interest
income of $367,566 and $523, and interest expense of $63,307 and $835 for the
nine months ended September 30, 1998 and the period July 18, 1997 to December
31, 1997, respectively.
 
    STOCK-BASED COMPENSATION--The Company accounts for stock-based employee
compensation arrangements in accordance with provisions of Accounting Principles
Board ("APB") Opinion No. 25, "Accounting for Stock Issued to Employees," and
complies with the disclosure provisions of SFAS No. 123, "Accounting for
Stock-Based Compensation." Under APB No. 25, compensation expense is based on
the difference, if any, on the date of grant, between the fair value of
priceline.com's stock and the exercise price.
 
    The Company accounts for equity instruments issued to non-employees in
accordance with the provisions of SFAS No. 123 and Emerging Issues Task Force
("EITF") Issue No. 96-18, "Accounting for Equity Instruments That Are Issued to
Other Than Employees for Acquiring, or in Conjunction with Selling, Goods or
Services".
 
    INCOME TAXES--The Company accounts for income taxes in accordance with SFAS
No. 109, "Accounting for Income Taxes", which requires recognition of deferred
tax liabilities and assets for the expected future tax consequences of events
that have been included in the financial statements or tax returns. Under this
method, deferred tax liabilities and assets are determined based on the
temporary difference between the financial statement and tax basis of assets and
liabilities using presently enacted tax rates in effect. Valuation allowances
are established when necessary to reduce deferred tax assets to the amounts
expected to be realized.
 
    During the period priceline.com operated as an LLC, it was treated
substantially as a partnership for tax purposes and, accordingly, the tax effect
of its activities accrued to its members through July 1998.
 
    NET LOSS PER SHARE--The Company computes net loss per share in accordance
with SFAS No. 128, "Earnings Per Share" which requires dual presentation of
basic earnings per share ("EPS") and diluted EPS.
 
    Basic earnings per share is computed using the weighted average common
shares outstanding during the period. Diluted earnings per share is computed
using the weighted average common shares and common equivalent shares
outstanding during the period. Common equivalent shares consist of the
incremental shares of Common Stock issuable upon conversion of the Series A
Convertible Preferred Stock (using the if-converted method) and shares of Common
Stock issuable upon the exercise of stock options and warrants (using the
treasury stock method). At September 30, 1998 there were outstanding options and
warrants to purchase 17,187,042 shares of Common Stock. Outstanding warrants and
options could potentially dilute basic earnings per share in the future but have
not been included in the computation of diluted net loss per share as the impact
would have been antidilutive for the periods presented. Accordingly, the basic
and diluted per share amounts are identical for all periods presented. See
 
                                      F-9
<PAGE>
             PRICELINE.COM INCORPORATED AND PRICELINE TRAVEL, INC.
 
               NOTES TO COMBINED FINANCIAL STATEMENTS (CONTINUED)
 
2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)
Note 6 for a warrant agreement between priceline.com and Delta Air Lines
relating to an additional 15,114,083 shares of Common Stock.
 
    BUSINESS RISK--Business risks include the following:
 
    Competition--The markets for the products and services offered on the
priceline.com service are intensely competitive. The Company competes with both
traditional distribution channels and online services. The Company currently or
potentially competes with a variety of companies with respect to each product or
services offered. The Company potentially faces competition from a number of
large online services that have expertise in developing online commerce and in
facilitating Internet traffic. Many competitors have significant competitive
advantages. For example, airlines, hotels and other suppliers also sell their
products and services directly to consumers and have established Web sites.
Internet directories, search engines and large traditional retailers have
significantly greater operating histories, customer bases, technical expertise,
brand recognition and/or online commerce experience than the Company. In
addition, certain competitors may be able to devote significantly greater
resources to furthering their business.
 
    Dependence on Airline Industry and Certain Carriers--The Company's near
term, and possibly long term, prospects are significantly dependent upon the
sale of leisure airline tickets. Sales of leisure airline tickets and revenues
derived from related adaptive marketing programs represented essentially all of
the Company's revenues for the nine months ended September 30, 1998. Sales of
airline tickets from the Company's two largest airline suppliers accounted for
approximately 88% of airline ticket revenue for the nine months ended September
30, 1998. As a result, currently the Company is substantially dependent upon the
continued participation of these two airlines in the priceline.com service in
order to maintain and continue to grow its total airline ticket revenues.
Significantly reducing the Company's dependence on the airline and travel
industries is likely to take a long time and there can be no guarantee that the
Company will succeed in reducing that dependence.
 
    Risks Associated with Brand Development--The Company intends to continue to
pursue an aggressive brand-enhancement strategy, which will include mass market
and multimedia advertising, promotional programs and public relations
activities. To increase awareness of the priceline.com brand and expand it to a
wide range of products and services, the Company will need to continue to spend
significant amounts on advertising and promotions. These expenditures may not
result in a sufficient increase in revenues to cover such advertising and
promotions expenses.
 
    CONCENTRATION OF CREDIT RISK--Financial instruments which potentially
subject the Company to concentrations of credit risk are principally bank
deposits and accounts receivable. Cash and cash equivalents and restricted bank
deposits are deposited with high credit quality financial institutions. Accounts
receivable typically represent credit card purchases, are derived from the
revenues earned from customers in the U.S. and are denominated in U.S. dollars.
Accounts receivable balances are typically settled through customer credit cards
and, as a result, the majority of accounts receivable are collected upon
processing of credit card transactions. The Company maintains an allowance for
doubtful accounts receivable based upon the expected collectibility of accounts
receivable. During the periods ended September 30, 1998 and December 31, 1997,
no customers accounted for more than 10% of net revenues or net accounts
receivable.
 
    SEGMENT REPORTING--Effective January 1, 1998 the Company adopted Statement
of Financial Accounting Standard No. 131, "Disclosures About Segments of an
Enterprise and Related Information." The Company has operated primarily as a
single segment and will evaluate additional segment disclosure requirements as
it expands its operations.
 
                                      F-10
<PAGE>
             PRICELINE.COM INCORPORATED AND PRICELINE TRAVEL, INC.
 
               NOTES TO COMBINED FINANCIAL STATEMENTS (CONTINUED)
 
2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)
    RECENT ACCOUNTING PRONOUNCEMENTS--In March 1998, the American Institute of
Certified Public Accountants issued Statement of Position ("SOP") 98-1,
"Accounting for Costs of Computer Software Developed or Obtained for Internal
Use." This SOP is effective for fiscal years beginning after December 15, 1998.
This SOP provides guidance on accounting for the cost of computer software
developed or obtained for internal use. The Company will adopt this SOP
beginning January 1, 1999 and is currently in the process of evaluating its
impact.
 
3. ACCOUNTS RECEIVABLE
 
    A summary of the activity in the allowance for uncollectible accounts for
the nine months ended September 30, 1998 is as follows:
 
<TABLE>
<CAPTION>
                                                                                     AMOUNT
                                                                                   -----------
<S>                                                                                <C>
Provision charged to expense.....................................................  $   168,002
Charge offs......................................................................     (115,721)
                                                                                   -----------
Balance at end of period.........................................................  $    52,281
                                                                                   -----------
                                                                                   -----------
</TABLE>
 
4. PROPERTY AND EQUIPMENT
 
    Property and equipment at September 30, 1998 and December 31, 1997 consist
of the following:
 
<TABLE>
<CAPTION>
                                                                             ESTIMATED
                                                                              USEFUL
                                                                               LIVES       SEPTEMBER 30,  DECEMBER 31,
                                                                              (YEARS)          1998           1997
                                                                          ---------------  -------------  ------------
<S>                                                                       <C>              <C>            <C>
Computer equipment and software.........................................             3      $ 6,389,624    $1,144,263
Office equipment........................................................             3          578,434        89,846
Furniture and fixtures..................................................             7          339,220       158,006
                                                                                           -------------  ------------
</TABLE>
 
<TABLE>
<S>                                                                   <C>          <C>
Total...............................................................   7,307,278    1,392,115
Less accumulated depreciation and amortization......................   1,838,423      211,996
                                                                      -----------  -----------
Property and equipment--net.........................................   $5,468,855   $1,180,119
                                                                      -----------  -----------
                                                                      -----------  -----------
</TABLE>
 
    Depreciation and amortization was $1,626,427 and $211,996 for the nine
months ended September 30, 1998 and for the period July 18, 1997 to December 31,
1997, respectively.
 
5. LONG-TERM DEBT
 
    In April 1998, priceline.com issued a promissory note to an investor for
$1,000,000. The promissory note bears interest at a rate of 6% per annum and
matures on April 15, 2003. In connection with the promissory note, priceline.com
issued detachable warrants to purchase 50,000 common shares at $1.00 per share.
The portion of the proceeds allocable to the warrant, estimated fair value of
$12,795, was accounted for as additional paid-in capital. The discount is
recorded as interest expense over the term of the promissory note. At September
30, 1998, the principal balance of the promissory note, net of unamortized
discount, was $989,396.
 
                                      F-11
<PAGE>
             PRICELINE.COM INCORPORATED AND PRICELINE TRAVEL, INC.
 
               NOTES TO COMBINED FINANCIAL STATEMENTS (CONTINUED)
 
6. STOCKHOLDERS' EQUITY
 
    Combined stockholders' equity at September 30, 1998 and December 31, 1997
consist of the following:
 
<TABLE>
<CAPTION>
                                                                                     SEPTEMBER 30,   DECEMBER 31,
                                                                                          1998           1997
                                                                                     --------------  -------------
<S>                                                                                  <C>             <C>
Priceline.com Incorporated:
  Common stock, $0.01 par value--authorized 150,000,000 shares; issued and
    outstanding, 74,409,902 and 41,335,776 at September 30, 1998 and December 31,
    1997, respectively.............................................................  $      744,099  $     413,358
  Preferred Stock, Series A Convertible, $0.01 par value; $1.16 liquidation value;
    authorized, 30,000,000 shares; issued and outstanding, 17,288,684..............         172,887             --
  Additional paid-in capital.......................................................      53,281,718        836,642
Priceline Travel, Inc:
  Common stock, $1 par value--3,000 shares authorized, issued and outstanding......           3,000          3,000
  Additional paid-in capital.......................................................           3,363          3,363
Accumulated deficit................................................................     (41,052,033)    (2,513,482)
                                                                                     --------------  -------------
    Total stockholders' equity (deficiency)........................................  $   13,153,034  $  (1,257,119)
                                                                                     --------------  -------------
</TABLE>
 
    On July 18, 1997, priceline.com issued 34,392,169 shares of Common Stock for
the initial contributed services of certain initial employees. No compensation
expense was recognized for the contributed services as priceline.com was in the
early stages of development.
 
    Also, on July 18, 1997, priceline.com issued 5,516,667 shares of Common
Stock to Walker Digital and thereafter transferred to priceline.com all of the
rights, title, and interest in certain patents and patent applications relating
to buyer driven commerce.
 
    Through September 30, 1998 priceline.com issued 28,001,066 shares of Common
Stock for cash consideration of $27,370,364, of which $500,000 was received on
October 13, 1998, at per share amounts ranging from $0.876 to $1.00. In July
1998, priceline.com also issued a profits interest with respect to 6,500,000
units in the Company's predecessor, priceline.com LLC, which units were
converted into an equivalent number of shares of Common Stock, to the Chairman
and Chief Executive Officer which resulted in the recognition of a one time
charge of $6,500,000 with respect to these shares.
 
    In July 1998, pursuant to an agreement between priceline.com and two
partnerships affiliated with General Atlantic Partners, LLC (collectively
"GAP"), priceline.com sold to GAP a total of 17,288,684 shares of Series A
Convertible Preferred Stock, par value $0.01 per share (the "Series A Preferred
Stock") for $20,000,000.
 
    In December 1998, priceline.com raised gross proceeds of $55,350,000 by
completing a private placement of an aggregate of 13,837,500 shares of its
Series B Convertible Preferred Stock (the "Series B Preferred Stock") with
several investors, including GAP and Vulcan Ventures Incorporated.
 
    Shares of the Series A and Series B Preferred Stock are automatically
convertible, subject to anti-dilution adjustment, into an equal number of shares
of Common Stock upon an initial public offering of the Company. The holders of
the Series A Preferred Stock and Series B Preferred Stock vote together as a
single class with the holders of Common Stock. The shares of the Series A
Preferred Stock and Series B
 
                                      F-12
<PAGE>
             PRICELINE.COM INCORPORATED AND PRICELINE TRAVEL, INC.
 
               NOTES TO COMBINED FINANCIAL STATEMENTS (CONTINUED)
 
6. STOCKHOLDERS' EQUITY (CONTINUED)
Preferred Stock rank senior to the Common Stock with respect to liquidation and
equal to the Common Stock with respect to dividends.
 
    In March 1998, priceline.com issued warrants to purchase 100,000 shares of
Common Stock to a non-employee in exchange for marketing services rendered to
the Company. The estimated fair value of the warrants at the date of grant was
approximately $100,000, and has been reflected as sales and marketing expense
and additional paid-in-capital.
 
    In April 1998, priceline.com issued warrants to purchase 50,000 shares of
Common Stock at an exercise price of $1.00 per share in conjunction with a
promissory note (see Note 5--Long-Term Debt).
 
    In August 1998, priceline.com issued to Delta Air Lines a warrant to
purchase up to 15,114,083 shares of Common Stock at an exercise price of
approximately $1.16 per share ("Delta Warrant"). Generally, the Delta Warrant
will vest if Delta Air Lines achieves certain predetermined performance
thresholds. Under the terms of the Delta Warrant, there is no penalty for
failure to provide ticket inventory sufficient to satisfy these performance
thresholds. In accordance with EITF Issue No. 96-18, "Accounting for Equity
Instruments That Are Issued to Other Than Employees for Acquiring, or in
Conjunction with Selling, Goods or Services," no expense has been recorded for
the period ended September 30, 1998, due to contingencies related to the
issuance of the Delta Warrant, including quantity and vesting. Subsequent to
September 30, 1998, the Company discussed with Delta Air Lines, amendments to
the warrants that are intended to resolve the issuance and vesting
contingencies. If and when the contingencies are resolved, the Company would
recognize expense based upon the fair value of the warrants at that time.
 
    As of September 30, 1998, no warrants have been exercised.
 
7. STOCK OPTION PLAN
 
    Priceline.com has adopted the 1997 Omnibus Plan (the "Plan"), which provides
for grants of options as incentives and rewards to encourage employees,
officers, consultants and directors in the long term success of the Company. The
Plan provides for grants of options to purchase up to 19,100,000 shares at a
purchase price equal to the fair market value on the date of grant. Generally,
the options vest over three years from the date of grant. In accounting for the
Plan, the Company has elected to follow APB 25 and related interpretations in
accounting for its employee stock options. When the exercise price of stock
options issued under the plan equaled the fair value of the underlying stock on
the date of grant, no compensation expense was recorded. Compensation expense
was recognized for the fair value of the options granted to non-employees and to
the extent the fair value of the underlying stock exceeded the exercise price of
employee stock options. Compensation expense, included in general and
administrative, recognized during the nine months ended September 30, 1998
aggregated $215,517.
 
                                      F-13
<PAGE>
             PRICELINE.COM INCORPORATED AND PRICELINE TRAVEL, INC.
 
               NOTES TO COMBINED FINANCIAL STATEMENTS (CONTINUED)
 
7. STOCK OPTION PLAN (CONTINUED)
    The following summarizes the transactions pursuant to the Plan:
 
<TABLE>
<CAPTION>
                                                                                    WEIGHTED
                                                                                     AVERAGE
                                                                    SHARES        OPTION PRICE
                                                                    ------------  -------------
<S>                                                                 <C>           <C>
Granted during 1998...............................................    17,117,875    $    1.00
Forfeited.........................................................       (80,833)        1.00
                                                                    ------------
Balance at September 30, 1998.....................................    17,037,042         1.00
                                                                    ------------
                                                                    ------------
Exercisable at September 30, 1998.................................      None
                                                                    ------------
                                                                    ------------
</TABLE>
 
    Had compensation costs been determined based upon the fair value at grant
date, the Company's pro forma net loss and pro forma net loss per share for the
nine month period ended September 30, 1998 would have been reported as follows:
 
<TABLE>
<S>                                                              <C>
Pro forma net loss.............................................  $(39,786,719)
                                                                 -----------
                                                                 -----------
Pro forma net loss per share...................................  $     (0.64)
                                                                 -----------
                                                                 -----------
</TABLE>
 
    Because additional stock options are expected to be granted, the above pro
forma disclosures are not representative of pro forma effects on reported
financial results for future periods.
 
    The fair value of each option grant was determined on the date of grant
using the minimum value method. The weighted average fair value of options
granted during 1998 was estimated to be approximately $0.16 per option on the
dates of grant using the minimum value method and the following assumptions:
volatility of 0%, risk free interest rate of 6.00% and an expected life of 3
years, respectively. The Plan also provides for the grant of tandem stock
appreciation rights, stand-alone stock appreciation rights, phantom stock and
other forms of equity based incentive awards which do not reduce the number of
shares with respect to which incentive awards may be granted. No such awards
were made as of September 30, 1998.
 
8. TAXES
 
    INCOME TAXES--Through July 31, 1998, priceline.com's predecessor operated as
a limited liability company and income taxes (benefits) accrued to the members.
Accordingly, no income taxes (benefit) was reflected in the accompanying
financial statements as of December 31, 1997 and for the period then ended.
Since converting from an LLC to a corporation in July 1998, the Company has
incurred tax net operating losses of approximately $8,200,000. Priceline.com
will file its initial corporate tax return for the period August 1, 1998 through
December 31, 1998. As of September 30, 1998 a valuation allowance for the full
amount of the net deferred tax asset of approximately $3,400,000 resulting from
the tax net operating losses was recorded because of the uncertainty regarding
its realization.
 
    FEDERAL AIR TRANSPORTATION TAX--Currently, a federal air transportation tax
is imposed upon the sale of airline tickets and generally is collected by the
airlines selling the tickets. The tax is based upon a percentage of the cost of
transportation, which was 9% for periods prior to October 1, 1998 and 8%
thereafter. The tax has been calculated based on the price charged by the
airline for a ticket, rather than the price paid by the customer. There is a
possibility that current law requires computation of the tax based
 
                                      F-14
<PAGE>
             PRICELINE.COM INCORPORATED AND PRICELINE TRAVEL, INC.
 
               NOTES TO COMBINED FINANCIAL STATEMENTS (CONTINUED)
 
8. TAXES (CONTINUED)
on the price paid by the customer. Approximately $56,000 in additional taxes
relating to the method of calculating the tax has been accrued as of September
30, 1998.
 
9. OTHER RELATED PARTY TRANSACTIONS
 
    The Founder and Vice Chairman of priceline.com also serves as non-executive
Chairman of NewSub Services, Inc.("NewSub"), a direct marketing company
co-founded by him. The Company participates in certain adaptive marketing
programs with NewSub. Sales and marketing expense related to these programs
totalled $18,948 for the nine months ended September 30, 1998. There was no such
expense in 1997.
 
    In June 1998, priceline.com issued a promissory note to Walker Digital for
$1,000,000. The promissory note bore interest at a rate of 6% per annum and was
due June 30, 1999. The note has been repaid.
 
10. COMMITMENTS AND CONTINGENCIES
 
    LEGAL PROCEEDINGS--The Company has received verbal notice of a third party's
intent to file with the United States Patent and Trademark Office a request to
declare an "interference" with the Company's core buyer-driven commerce business
patent. An interference is requested when a patent applicant asserts claims that
they are a prior inventor of subject matter covered by one or more claims in a
third party issued patent or pending application. A successful interference
action could prohibit the original patent holder from exploiting the invention
entirely. The Company has received notice of the potential interference from the
holder of two related United States Patent applications, one of which has since
been issued as a patent. The Company is currently awaiting information from the
Patent and Trademark Office regarding the status of the interference request.
The Company has reviewed a published international patent application, based on
the two United States patent applications, with outside intellectual property
counsel and believes that there is no reasonable basis for the United States
Patent and Trademark Office to declare an interference action, and, if an
interference is declared, that there is no reasonable basis to resolve such
interference adversely. However, if an interference action is declared, the
patent office could then seek to determine whether one or more of the Company's
patent claims were invalid. If an interference is subsequently resolved in a
manner adverse to the Company, such declaration or resolution could prevent the
Company from exploiting its business model through the priceline.com service or
require the Company to obtain licenses from one or more other patent holders at
a cost which may adversely affect the Company's business.
 
    From time to time the Company has been and expects to continue to be subject
to legal proceedings and claims in the ordinary course of business, including
claims of alleged infringement of third party intellectual property rights by
the Company. Such claims, even if not meritorious, could result in the
expenditure of significant financial and managerial resources. The Company is
not aware of any legal proceedings or claims that it believes will have,
individually or in the aggregate, a material adverse effect on its business,
financial condition or results of operations.
 
    AIRLINE ALLIANCES AND RELATIONSHIPS--Priceline.com has entered into Airline
Participation Agreements with four domestic and 12 international airlines. The
Airline Participation Agreements do not commit the airlines to provide tickets
for any particular routes or at a discount to their retail prices, but outline
the terms and conditions under which tickets may be sold pursuant to fares,
rules and availability that the airlines may provide from time to time. The
Airline Participation Agreements are generally subject to termination upon 30
days' notice by priceline.com or the airline.
 
                                      F-15
<PAGE>
             PRICELINE.COM INCORPORATED AND PRICELINE TRAVEL, INC.
 
               NOTES TO COMBINED FINANCIAL STATEMENTS (CONTINUED)
 
10. COMMITMENTS AND CONTINGENCIES (CONTINUED)
    EMPLOYMENT CONTRACTS--Priceline.com has entered into employment agreements
with certain members of senior management that provide for minimum annual
compensation of approximately $2,135,000 in the aggregate. The agreements
provide for periods of employment of up to 3 years. Generally, the agreements
provide for incentives and bonuses based on the achievement of performance
goals, as well as, the grant of stock options under the 1997 Omnibus Stock
Option Plan.
 
    CAPITAL LEASES--Priceline.com leases certain machinery and equipment costing
$74,711 under capital lease agreements. Accumulated depreciation on this
equipment was $20,752 and $2,075 at September 30, 1998 and December 31, 1997,
respectively. These amounts are included in property and equipment in Note 4.
 
    Future minimum lease payments, including interest, under these capital
leases at September 30, 1998 are as follows:
 
<TABLE>
<CAPTION>
PERIOD ENDING SEPTEMBER 30,
- -----------------------------------------------------------------------------------
<S>                                                                                  <C>
1999...............................................................................  $  30,389
2000...............................................................................     30,389
2001...............................................................................      5,065
                                                                                     ---------
Total minimum lease payments.......................................................     65,843
Less amounts representing interest.................................................      8,982
                                                                                     ---------
Present value of future minimum lease payments.....................................     56,861
Less current portion of obligations................................................     24,212
                                                                                     ---------
Obligations under capital leases, net of current portion...........................  $  32,649
                                                                                     ---------
                                                                                     ---------
</TABLE>
 
11. BENEFIT PLAN
 
    Priceline.com adopted a defined contribution 401(k) savings plan (the
"Plan") during 1998 covering all employees who are at least 21 years old and
have completed 6 months of service. The Plan allows eligible employees to
contribute up to 20% of their eligible earnings, subject to a statutorily
prescribed annual limit. Priceline.com may make matching contributions on a
discretionary basis to the Plan. All participants are fully vested in their
contributions and investment earnings. During the nine months ended September
30, 1998, priceline.com did not make any matching contributions to the Plan.
 
                                      F-16
<PAGE>
                                     [LOGO]
<PAGE>
                                    PART II
 
                     INFORMATION NOT REQUIRED IN PROSPECTUS
 
ITEM 13. OTHER EXPENSES OF ISSUANCE AND DISTRIBUTION.
 
    The following table sets forth the costs and expenses, other than
underwriting discounts and commissions, payable by the Company in connection
with the sale of Common Stock being registered. All amounts are estimates.
 
<TABLE>
<S>                                                                             <C>
SEC registration fee..........................................................  $    31,970
NASD Filing fee...............................................................       *
Nasdaq National Market listing fee............................................       *
Printing and engraving expenses...............................................       *
Legal fees and expenses.......................................................       *
Accounting fees and expenses..................................................       *
Blue sky fees and expenses....................................................       *
Transfer agent fees...........................................................       *
Miscellaneous fees and expenses...............................................       *
                                                                                -----------
      Total...................................................................  $    *
                                                                                -----------
                                                                                -----------
</TABLE>
 
- ------------------------
 
*   to be filed by amendment.
 
ITEM 14. INDEMNIFICATION OF DIRECTORS AND OFFICERS.
 
    Section 145 of the Delaware General Corporation Law (the "DGCL") authorizes
a court to award or a corporation's Board of Directors to grant indemnity to
directors and officers in terms sufficiently broad to permit such
indemnification under certain circumstances for liabilities (including
reimbursement for expenses incurred) arising under the Securities Act of 1933,
as amended (the "Securities Act").
 
    As permitted by the DGCL, Article VIII of the Company's By-Laws provide that
(i) the Company is required to indemnify its directors and officers to the
fullest extent permitted by the DGCL, subject to certain very limited
exceptions; (ii) the Company is permitted to indemnify its other employees to
the extent that it indemnifies its officers and directors, unless otherwise
required by law, its Certificate of Incorporation, its By-Laws or agreements;
(iii) the Company is required to advance expenses, as incurred, ti its directors
and officers in connection with a legal proceeding to the fullest extent
permitted by the DGCL, subject to certain very limited exceptions; and (iv) the
rights conferred in the By-Laws are not exclusive. As permitted by the DGCL, the
Company's Certificate of Incorporation includes a provision that eliminates the
personal inability of its directors for monetary damages for breach of fiduciary
duty as a director, except for liability (i) for any breach of the director's
duty of loyalty to the Company or its stockholders; (ii) for acts of omissions
not in good faith or that involve intentional misconduct or a knowing violation
of law; (iii) under Section 174 of the DGCL (regarding payments of dividends;
stock purchases or redemptions which are unlawful); or (iv) for any transaction
from which the director derived an improper personal benefit. This provision in
the Certificate of Incorporation does not eliminate the directors' fiduciary
duty, and in appropriate circumstances equitable remedies such as injunctive or
other forms of non-monetary relief will remain available under Delaware law. In
addition, each director will continue to be subject to liability for breach of
the director's duty of loyalty to the Company for acts or omissions not in good
faith or involving intentional misconduct, for knowing violations of law, for
actions leading to improper personal benefit to the director, and for payment of
dividends or approval of stock repurchases or redemptions that are unlawful
under Delaware law. The provision also does not affect a director's
responsibilities under any other law, such as the federal securities laws or
state or federal environmental laws.
 
                                      II-1
<PAGE>
    Under Article VIII, Section 8, of the Company's By-Laws, the Company is
authorized to, and has purchased, insurance covering the Company's directors and
officers against liability asserted against them in their capacity as such.
Reference is made to the Underwriting Agreement contained in Exhibit 1.1 hereto,
which contains provisions indemnifying officers and directors of the Company
against certain liabilities.
 
ITEM 15. RECENT SALES OF UNREGISTERED SECURITIES.
 
    Since its inception, the Company has issued and sold the following
securities:
 
    In July 1997, the Company's predecessor issued an aggregate of 34,392,169
equity units to Messrs. Jay S. Walker, Jesse M. Fink, Timothy G. Brier, Paul E.
Francis and two other executive officers for services previously rendered.
 
    In July 1997, the Company's predecessor issued 5,516,667 equity units to
Walker Digital Corporation, which, together with its affiliate WAMP, transferred
to the Company all of their rights, title, and interest in certain patents and
patent applications relating to buyer-driven commerce.
 
    From September 1997 to February 1998, the Company's predecessor issued and
sold an aggregate of 5,080,702 equity units to Mr. Paul E. Francis, a
partnership affiliated with GAP LLC and six other investors for an estimated
fair value of $0.876 per share.
 
    From March 1998 to July 1998, the Company's predecessor issued and sold and
aggregate of 22,920,364 equity units to Mr. Jay S. Walker, a trust affiliated
with Mr. Jay S. Walker, Walker Digital, Mr. Richard S. Braddock, a trust
affiliated with Mr. N.J. Nicholas, Jr., Mr. Ralph M. Bahna and one other
investor for an estimated fair value of $1.00 per share.
 
    In March 1998, the Company issued warrants to purchase 100,000 shares of
Common Stock to a non-employee in exchange for services rendered to the Company
for an estimated fair value of approximately $100,000.
 
    In April 1998, the Company issued warrants to purchase 50,000 shares of
Common Stock at an exercise price of $1.00 per share to an individual in
connection with the execution of a promissory note in the amount of $1,000,000.
 
    In July 1998, the Company's predecessor issued 6,500,000 equity units to Mr.
Richard S. Braddock in connection with his employment as its Chief Executive
Officer and Chairman.
 
    On July 31, 1998, all of the foregoing equity units were converted into an
equal number of shares of Common Stock as a result of the merger of the
Company's predecessor into the Company.
 
    On July 31, 1998, the Company issued and sold 17,288,684 shares of its
Series A Convertible Preferred Stock to two partnerships affiliated with GAP LLC
for an estimated fair value of approximately $1.16 per share.
 
    In August 1998, the Company issued warrants to Delta to purchase up to
15,114,083 shares of Common Stock at an exercise price of approximately $1.16
per share.
 
    In October 1998, the Company issued and sold an aggregate of 107,759 shares
of Common Stock to Mr. Paul J. Blackney and another individual for an estimated
fair value of $1.16 per share.
 
    On December 8, 1998, the Company issued and sold an aggregate of 13,837,500
shares of its Series B Convertible Preferred Stock to Vulcan, two partnerships
affiliated with GAP LLC and seven other investors for an estimated fair value of
$4.00 per share.
 
    On December 8, 1998, the Company issued and sold an aggregate of 62,500
shares of Common Stock to Mr. Braddock for an estimated fair value of $4.00 per
share.
 
                                      II-2
<PAGE>
    The issuances described above in this Item 15 were deemed exempt from
registration under the Securities Act in reliance on either (i) Rule 701
promulgated under the Securities Act as offers and sales of securities pursuant
to certain compensatory benefit plans and contracts relating to compensation in
compliance with Rule 701 or (ii) Section 4 (2) of the Securities Act as
transactions by an issuer not involving any public offering.
 
ITEM 16. EXHIBITS AND FINANCIAL STATEMENT SCHEDULES.
 
(A) EXHIBITS:
 
<TABLE>
<CAPTION>
EXHIBIT                                                   DESCRIPTION
- ---------  ---------------------------------------------------------------------------------------------------------
<C>        <S>
    1.1*   Form of Underwriting Agreement.
    2.1    Agreement of Merger, dated as of July 31, 1998, between priceline.com LLC and Registrant.
    2.2*   Form of Agreement of Merger between Priceline Travel Inc. and Registrant.
    3.1*   Form of Amended and Restated Certificate of Incorporation of Registrant to be filed on the closing of the
           offering made hereby.
    3.2*   Form of By-Laws of Registrant to be filed on the closing of the offering made hereby.
    4.1    Reference is hereby made to Exhibits 3.1 and 3.2.
    4.2*   Specimen Certificate for Registrant's Common Stock.
    4.3    Amended and Restated Registration Rights Agreement, dated as of December 8, 1998, among Registrant and
           certain stockholders of Registrant.
    5.1*   Opinion of Melissa M. Taub, Esq., General Counsel to the Registrant.
   10.1*   Stock Option Plan of Registrant.
   10.2    Stock Purchase Agreement, dated July 31, 1998, among Registrant and the investors named therein, as
           amended.
   10.3    Stock Purchase Agreement, dated as of December 8, 1998, among Registrant and the investors named therein.
   10.4    Reference is hereby made to Exhibit 4.3.
   10.5*   Purchase and Intercompany Services Agreement, dated April 6, 1998, among Registrant, Walker Asset
           Management Limited Partnership, Walker Digital Corporation and Priceline Travel, Inc.
   10.6*   Employment Agreement, dated as of January 1, 1998, between Jay Walker, Walker Digital Corporation,
           Registrant and Jesse Fink, as amended.
   10.7*   Employment Agreement, dated as of July 23, 1998, between Registrant and Tim Brier, as amended.
   10.8*   Employment Agreement, dated as of August 15, 1998, between Registrant and Richard Braddock.
   10.9    Airline Participation Agreement, dated April 1998, between Registrant and Trans World Airlines, Inc.
   10.11*  Airline Participation Agreement, dated August 31, 1998, between Registrant and Delta Air Lines, Inc., as
           amended.
   10.12*  General Agreement, dated August 31, 1998 between Registrant and Delta Air Lines, Inc., as amended.
   10.13*  Participation Warrant Agreement, dated August 31, 1998, between Registrant and Delta Air Lines, Inc., as
           amended.
   10.14   Systems Access Agreement, dated as of August 4, 1997, between Registrant and WORLDSPAN, L.P.
</TABLE>
 
                                      II-3
<PAGE>
<TABLE>
<CAPTION>
EXHIBIT                                                   DESCRIPTION
- ---------  ---------------------------------------------------------------------------------------------------------
   10.15   Master Agreement for Outsourcing Call Center Support, dated as of April 6, 1998, between Registrant and
           CALLTECH Communications, Incorporated.
<C>        <S>
   10.16   $1,000,000 Commercial Promissory Note, dated April 15, 1996, between Registrant and Andre Jaeckle.
   10.17   Warrant Agreement, dated April 15, 1998, between Registrant and Andre Jaeckle.
   10.18   Warrant Agreement, dated April 9, 1998, between Registrant and William Shatner.
   23.1    Consent of Deloitte & Touche LLP.
   24.1    Power of Attorney (see page II-5).
</TABLE>
 
- ------------------------
 
*   To be filed by amendment.
 
(B) FINANCIAL STATEMENT SCHEDULES:
 
    All schedules have been omitted because the information required to be set
forth therein is not applicable or is shown in the combined financial statements
or notes thereto.
 
ITEM 17. UNDERTAKINGS
 
    The undersigned Registrant hereby undertakes to provide to the Underwriters
at the closing specified in the Underwriting Agreement, certificates in such
denominations and registered in such names as required by the Underwriters to
permit prompt delivery to each purchaser.
 
    Insofar as indemnification for liabilities arising under the Securities Act
may be permitted to directors, officers and controlling persons of the
Registrant pursuant to the foregoing provisions, or otherwise, the Registrant
has been advised that in the opinion of the Securities and Exchange Commission
such indemnification is against public policy as expressed in the Securities Act
and is, therefore, unenforceable. In the event that a claim for indemnification
against such liabilities (other than the payment by the Registrant of expenses
incurred or paid by a director, officer or controlling person of the Registrant
in the successful defense of any action, suit or proceeding) is asserted by such
director, officer or controlling person in connection with the securities being
registered, the Registrant will, unless in the opinion of its counsel the matter
has been settled by controlling precedent, submit to a court of appropriate
jurisdiction the question whether such indemnification by it is against public
policy as expressed in the Securities Act and will be governed by the final
adjudication of such issue.
 
    The undersigned Registrant hereby undertakes that:
 
(1) For purposes of determining any liability under the Securities Act, the
    information omitted from the form of Prospectus filed as part of this
    Registration Statement in reliance upon rule 430A and contained in a form of
    Prospectus filed by the Registrant pursuant to Rule 424(b)(1) of (4) or
    497(h) under the Securities Act shall be deemed to be part of this
    Registration Statement as of the time it was declared effective.
 
(2) For the purposes of determining any liability under the Securities Act, each
    post-effective amendment that contains a form of Prospectus shall be deemed
    to be a new Registration Statement relating to the securities offered
    therein, and the offering of such securities at that time shall be deemed to
    be the initial BONA FIDE offering thereof.
 
                                      II-4
<PAGE>
                                   SIGNATURES
 
    Pursuant to the requirements of the Securities Act of 1933, the registrant
has duly caused this Registration Statement to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Stamford, State of
Connecticut, on December 23, 1998.
 
<TABLE>
<S>                             <C>  <C>
                                PRICELINE.COM INCORPORATED
 
                                By:             /s/ MELISSA M. TAUB
                                     -----------------------------------------
                                                  Melissa M. Taub
                                               SENIOR VICE PRESIDENT,
                                           GENERAL COUNSEL AND SECRETARY
</TABLE>
 
                               POWER OF ATTORNEY
 
    KNOW ALL MEN BY THESE PRESENTS, that each individual whose signature appears
below constitutes and appoints Paul E. Francis, Melissa M. Taub, and Thomas P.
D'Angelo, and each of them, his true and lawful attorneys-in-fact and agents,
with full power of substitution and resubstitution, for him and in his name,
place and stead, in any and all capacities, to sign any and all amendments
(including post-effective amendments) to this Registration Statement (or any
other registration statement for the same offering that is to be effective upon
filing pursuant to Rule 462(b) under the Securities Act), and to file the same,
with all exhibits thereto, and all documents in connection therewith, with the
Securities and Exchange Commission, granting unto said attorneys-in-fact and
agents, and each of them, full power and authority to do and perform each and
every act and thing requisite and necessary to be done in and about the
premises, as fully and to all intents and purposes as he might or could do in
person, hereby ratifying and confirming all that said attorneys-in-fact and
agents or any of them, or their or his substitute or substitutes, may lawfully
do or cause to be done by virtue hereof. This power of attorney may be executed
in counterparts.
 
    Pursuant to the requirements of the Securities Act of 1933, this
Registration Statement has been signed by the following persons in the
capacities and on the dates indicated:
 
<TABLE>
<CAPTION>
          SIGNATURE                       TITLE                    DATE
- ------------------------------  --------------------------  -------------------
<C>                             <S>                         <C>
   /s/ RICHARD S. BRADDOCK        Chairman and Chief
- ------------------------------    Executive Officer          December 23, 1998
     Richard S. Braddock          (Principal Executive
                                  Officer)
 
      /s/ JAY S. WALKER
- ------------------------------  Vice Chairman, Founder and   December 23, 1998
        Jay S. Walker             Director
 
     /s/ PAUL E. FRANCIS        Chief Financial Officer
- ------------------------------    (Principal Financial       December 23, 1998
       Paul E. Francis            Officer)
</TABLE>
 
                                      II-5
<PAGE>
<TABLE>
<CAPTION>
          SIGNATURE                       TITLE                    DATE
- ------------------------------  --------------------------  -------------------
 
     /s/ MELISSA M. TAUB        Senior Vice President,
- ------------------------------    General Counsel and        December 23, 1998
       Melissa M. Taub            Secretary
<C>                             <S>                         <C>
 
    /s/ THOMAS P. D'ANGELO      Vice President Finance and
- ------------------------------    Controller (Principal      December 23, 1998
      Thomas P. D'Angelo          Accounting Officer)
 
      /s/ RALPH M. BAHNA
- ------------------------------  Director                     December 23, 1998
        Ralph M. Bahna
 
     /s/ PAUL J. BLACKNEY
- ------------------------------  Director                     December 23, 1998
       Paul J. Blackney
 
     /s/ WILLIAM E. FORD
- ------------------------------  Director                     December 23, 1998
       William E. Ford
 
      /s/ MARSHALL LOEB
- ------------------------------  Director                     December 23, 1998
        Marshall Loeb
 
    /s/ N.J. NICHOLAS, JR.
- ------------------------------  Director                    December 23, 1998
      N.J. Nicholas, Jr.
</TABLE>
 
                                      II-6
<PAGE>
                                 EXHIBIT INDEX
 
<TABLE>
<CAPTION>
EXHIBIT                                                   DESCRIPTION
- ---------  ---------------------------------------------------------------------------------------------------------
<C>        <S>
    1.1*   Form of Underwriting Agreement.
    2.1    Agreement of Merger, dated as of July 31, 1998, between priceline.com LLC and Registrant.
    2.2*   Form of Agreement of Merger between Priceline Travel Inc. and Registrant.
    3.1*   Form of Amended and Restated Certificate of Incorporation of Registrant to be filed on the closing of the
           offering made hereby.
    3.2*   Form of By-Laws of Registrant to be filed on the closing of the offering made hereby.
    4.1    Reference is hereby made to Exhibits 3.1 and 3.2.
    4.2*   Specimen Certificate for Registrant's Common Stock.
    4.3    Amended and Restated Registration Rights Agreement, dated as of December 8, 1998, among Registrant and
           certain stockholders of Registrant.
    5.1*   Opinion of Melissa M. Taub, Esq., General Counsel to the Registrant.
   10.1*   Stock Option Plan of Registrant.
   10.2    Stock Purchase Agreement, dated July 31, 1998, among Registrant and the investors named therein, as
           amended.
   10.3    Stock Purchase Agreement, dated as of December 8, 1998, among Registrant and the investors named therein.
   10.4    Reference is hereby made to Exhibit 4.3.
   10.5*   Purchase and Intercompany Services Agreement, dated April 6, 1998, among Registrant, Walker Asset
           Management Limited Partnership, Walker Digital Corporation and Priceline Travel, Inc.
   10.6*   Employment Agreement, dated as of January 1, 1998, between Jay Walker, Walker Digital Corporation,
           Registrant and Jesse Fink, as amended.
   10.7*   Employment Agreement, dated as of July 23, 1998, between Registrant and Tim Brier, as amended.
   10.8*   Employment Agreement, dated as of August 15, 1998, between Registrant and Richard Braddock.
   10.9    Airline Participation Agreement, dated April 1998, between Registrant and Trans World Airlines, Inc.
   10.11*  Airline Participation Agreement, dated August 31, 1998, between Registrant and Delta Air Lines, Inc., as
           amended.
   10.12*  General Agreement, dated August 31, 1998 between Registrant and Delta Air Lines, Inc., as amended.
   10.13*  Participation Warrant Agreement, dated August 31, 1998, between Registrant and Delta Air Lines, Inc., as
           amended.
   10.14   Systems Access Agreement, dated as of August 4, 1997, between Registrant and WORLDSPAN, L.P.
   10.15   Master Agreement for Outsourcing Call Center Support, dated as of April 6, 1998, between Registrant and
           CALLTECH Communications, Incorporated.
   10.16   $1,000,000 Commercial Promissory Note, dated April 15, 1996, between Registrant and Andre Jaeckle.
   10.17   Warrant Agreement, dated April 15, 1998, between Registrant and Andre Jaeckle.
   10.18   Warrant Agreement, dated April 9, 1998, between Registrant and William Shatner.
   23.1    Consent of Deloitte & Touche LLP.
   24.1    Power of Attorney (see page II-5).
</TABLE>
 
- ------------------------
 
*   To be filed by amendment.

<PAGE>

                                                                     Exhibit 2.1

                               AGREEMENT OF MERGER

            AGREEMENT OF MERGER (this "Merger Agreement"), dated as of July 31,
1998, between priceline.com Incorporated, a Delaware corporation (the
"Corporation"), and priceline.com LLC, a Delaware limited liability company (the
"LLC"). The Corporation and the LLC are hereinafter sometimes collectively
referred to as the "Constituent Entities."

            WHEREAS, the Board of Directors of the Corporation has, by
resolutions duly adopted, approved this Merger Agreement and the transactions
contemplated hereby;

            WHEREAS, the sole stockholder of the Corporation has approved this
Merger Agreement and the transactions contemplated hereby;

            WHEREAS, the managers of the LLC have approved this Merger Agreement
and the transactions contemplated hereby;

            WHEREAS, the holder of a majority of the membership interests in the
LLC has approved this Merger Agreement and the transactions contemplated hereby;
and

            WHEREAS, the transactions contemplated by this Merger Agreement and
the Stock Purchase Agreement, dated July 31, 1998, among the Company, General
Atlantic Partners 48, L.P., a Delaware limited partnership and GAP Coinvestment
Partners, L.P., a New York limited partnership, constitute part of a single
integrated transaction and are pursuant to a single integrated plan intended to
qualify as a tax-free transaction under Section 351 of the Internal Revenue Code
of 1986, as amended.

            NOW, THEREFORE, in consideration of the mutual covenants and
agreements set forth herein and for the purpose of merging the LLC with and into
the Corporation (the "Merger") and setting forth certain terms and conditions of
the Merger and the mode of carrying the same into effect, the LLC and the
Corporation hereby agree as follows:

      1. Merger. Upon the terms and subject to the conditions hereof and in
accordance with Section 264 of the General Corporation Law of the State of Dela-

<PAGE>

ware and Section 18-209 of the Delaware Limited Liability Company Act, the LLC
shall be merged with and into the Corporation and the Corporation shall be, and
is herein referred to as, the "Surviving Entity." The Merger shall become
effective at the time and on the date of the filing of a Certificate of Merger
under the applicable requirements of Delaware law, or such later time and date
as may be set forth in the Certificate of Merger (the "Effective Time").

      2. Effect of Merger. At the Effective Time, the separate existence of the
LLC shall cease and the LLC shall be merged with and into the Corporation. The
consummation of the Merger will have the effects provided in Delaware law with
respect to a merger of a domestic limited liability company into a domestic
corporation.

      3. Certificate of Incorporation and By-Laws. The Certificate of
Incorporation and the By-Laws of the Corporation shall be the Certificate of
Incorporation and the By-Laws of the Surviving Entity.

      4. Directors and Officers.

            (a) The director of the Corporation at the Effective Time shall be
the director of the Surviving Entity from and after the Effective Time until his
respective successor or successors are duly elected or appointed and qualified
in the manner provided in the Certificate of Incorporation or By-Laws of the
Corporation or as otherwise provided by law.

            (b) The officers of the LLC at the Effective Time shall be the
officers of the Surviving Entity, each to hold office until their respective
successors are duly elected or appointed and qualified in the manner provided in
the Certificate of Incorporation or By-Laws of the Corporation, or as otherwise
provided by law.

      5. Further Assurances. From time to time, as and when required by the
Surviving Entity or by its successors and assigns, there shall be executed and
delivered on behalf of the LLC such deeds and other instruments, and there shall
be taken or caused to be taken by it all such further and other action as shall
be appropriate or necessary in order to vest, perfect or confirm, of record or
otherwise, in the Surviving Entity the title to and possession of all property,
interests, assets, rights, privileges, immunities, powers, franchises and
authority of the LLC and otherwise to carry out the purposes of this Merger
Agreement, and the officers of the Surviving Entity are


                                       2
<PAGE>

fully authorized in the name and on behalf of the LLC or otherwise to take any
and all such action to execute and deliver any and all such deeds and other
instruments.

      6. Conversion of Units. As of the Effective Time, by virtue of the Merger
and without any action on the part of the holder thereof:

            (a) Each equity interest of the LLC ("Unit") issued and outstanding
immediately prior to the Effective Time shall be converted into one duly
authorized, validly issued, fully paid and nonassessable share of common stock,
par value $0.01 (the "Common Stock"), of the Surviving Entity.

            (b) All Units to be converted pursuant to Section 6(a) shall from
and after the Effective Time no longer be outstanding and shall automatically be
cancelled and retired and shall cease to exist and each holder of a Unit which
immediately prior to the Effective Time represented an equity interest in the
LLC shall cease to have any rights as a member of the LLC, except the right to
receive shares of Common Stock in accordance with Section 6(a) for each Unit
held by them.

      7. Conversion of Options. As of the Effective Time, by virtue of the
Merger and without any action on the part of the holder thereof:

            (a) Each option or right to acquire Units issued by the LLC (each an
"LLC Option") which is outstanding, unexpired and unexercised as of the
Effective Time shall be converted into an option or right to acquire, as the
case may be, a number of shares of Common Stock equal to the number of Units for
which such LLC Option is then exercisable at an exercise price per share of
Common Stock equal to the per Unit option exercise price then applicable to the
LLC Option and otherwise subject to the same terms and conditions of the LLC
Option as in effect immediately prior to the Effective Time, except that all
references to the LLC in such LLC Option shall be deemed to be references to the
Surviving Entity (each such option or right, a "Surviving Entity Option").

            (b) All LLC Options to be converted pursuant to Section 7(a) shall
from and after the Effective Time no longer be outstanding and shall
automatically be cancelled and retired and shall cease to exist and each holder
of an LLC Option which immediately prior to the Effective Time represented a
right to acquire Units shall cease to have any rights as members of the LLC,
except the right to receive Surviving Entity Options in accordance with Section
7(a) for each LLC Option held by them.


                                       3
<PAGE>

      8. Cancellation of Shares. All shares of Common Stock, issued and
outstanding immediately prior to the Effective Time, shall no longer be
outstanding and shall be cancelled and retired and shall cease to exist.

      9. Amendment and Modification. This Merger Agreement may be amended or
modified at any time by the parties hereto, but only pursuant to an instrument
in writing signed by the parties and only in accordance with applicable
provisions of Delaware law.

      10. Entire Agreement; Assignment. This Merger Agreement constitutes the
entire agreement between the parties hereto with respect to the subject matter
hereof and supersedes all other prior agreements and understandings, both
written and oral, between the parties hereto with respect to the subject matter
hereof.

      11. Validity. The invalidity or unenforceability of any term or provision
of this Merger Agreement in any situation or jurisdiction shall not affect the
validity or enforceability of the other terms or provisions in any other
situation or in any other jurisdiction.

      12. Governing Law. This Merger Agreement shall be governed by, enforced
under and construed in accordance with the laws of the State of Delaware,
without giving effect to any choice or conflict of law provision or rule
thereof.

      13. Descriptive Headings. The descriptive headings therein are inserted
for convenience of reference only and shall in no way be construed to define,
limit, describe, explain, modify, amplify or add to the interpretation,
construction or meaning of any provision of, or scope or intent of, this Merger
Agreement or in any way affect this Merger Agreement.

      14. Counterparts. This Merger Agreement may be executed in any number of
counterparts, each of which shall be deemed an original, but all of which
together shall constitute one and the same instrument.

                            [SIGNATURE PAGE FOLLOWS]


                                       4
<PAGE>

            IN WITNESS WHEREOF, the LLC and the Corporation have caused this
Merger Agreement to be signed by their respective duly authorized persons as of
the date first above written.


                                        PRICELINE.COM LLC


                                        By:
                                           -------------------------------------
                                            Name: Paul E. Francis
                                            Title: Chief Financial Officer


                                        PRICELINE.COM INCORPORATED


                                        By:
                                           -------------------------------------
                                            Name: Paul E. Francis
                                            Title: Chief Financial Officer


                                       5

<PAGE>
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
                                                                     Exhibit 4.3


               AMENDED AND RESTATED REGISTRATION RIGHTS AGREEMENT

                                      among

                           PRICELINE.COM INCORPORATED,

                       GENERAL ATLANTIC PARTNERS 48, L.P.,

                        GAP COINVESTMENT PARTNERS, L.P.,

                       GENERAL ATLANTIC PARTNERS 50, L.P.,

                                       and

                          THE STOCKHOLDERS NAMED HEREIN

                          ----------------------------

                          Dated as of December 8, 1998

                          ----------------------------

- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
<PAGE>



                                TABLE OF CONTENTS
<TABLE>
<CAPTION>

                                                                            Page
                                                                            ----
<S>                                                                      <C>  

1.    Definitions..............................................................1

2.    General; Securities Subject to this Agreement............................6
      (a) Grant of Rights......................................................6
      (b) Registrable Securities...............................................6
      (c) Holders of Registrable Securities....................................7

3.    Demand Registration......................................................7
      (a) Request for Demand Registration......................................7
      (b) Incidental or "Piggy-Back" Rights with Respect to a Demand
          Registration.........................................................8
      (c) Effective Demand Registration........................................8
      (d) Expenses.............................................................9
      (e) Underwriting Procedures..............................................9
      (f) Selection of Underwriters............................................9

4.    Incidental or "Piggy-Back" Registration.................................10
      (a) Request for Incidental Registration.................................10
      (b) Expenses............................................................10

5.    Form S-3 Registration...................................................10
      (a) Request for a Form S-3 Registration.................................10
      (b) Form S-3 Underwriting Procedures....................................11
      (c) Limitations on Form S-3 Registrations...............................12
      (d) Expenses............................................................12
      (e) No Demand Registration..............................................12

6.    Holdback Agreements.....................................................12
      (a) Restrictions on Public Sale by Designated Holders...................12
      (b) Restrictions on Public Sale by the Company..........................13

7.    Registration Procedures.................................................13
      (a) Obligations of the Company..........................................13
      (b) Seller Information..................................................16
      (c) Notice to Discontinue...............................................16
      (d) Registration Expenses...............................................17

8.    Indemnification; Contribution...........................................17
      (a) Indemnification by the Company......................................17
</TABLE>

<PAGE>

<TABLE>
<CAPTION>


                                                                            Page
                                                                            ----
<S>                                                                      <C>  
      (b) Indemnification by Designated Holders...............................18
      (c) Conduct of Indemnification Proceedings..............................18
      (d) Contribution........................................................19

9.    Rule 144................................................................20

10.   Miscellaneous...........................................................20
      (a) Recapitalizations, Exchanges, etc...................................20
      (b) No Inconsistent Agreements..........................................21
      (c) Remedies............................................................21
      (d) Amendments and Waivers..............................................21
      (e) Notices.............................................................21
      (f) Successors and Assigns; Third-Party Beneficiaries...................22
      (g) Counterparts........................................................23
      (h) Headings............................................................23
      (i) Governing Law.......................................................23
      (j) Severability........................................................23
      (k) Entire Agreement....................................................24
      (l) Further Assurances..................................................24
      (m) Other Agreements....................................................24
</TABLE>
<PAGE>

               AMENDED AND RESTATED REGISTRATION RIGHTS AGREEMENT

            AMENDED AND RESTATED REGISTRATION RIGHTS AGREEMENT, dated as of
December 8, 1998 (this "Agreement"), among priceline.com Incorporated, a
Delaware corporation (the "Company"), General Atlantic Partners 48, L.P., a
Delaware limited partnership ("GAP LP"), GAP Coinvestment Partners, L.P., a New
York limited partnership ("GAP Coinvestment"), General Atlantic Partners 50,
L.P., a Delaware limited partnership ("GAP 50"), Jay Walker ("Walker"), Walker
Digital Corporation, a Delaware corporation ("WDC"), the Jay Walker Irrevocable
Credit Trust ("JWICT") and Richard S. Braddock ("Braddock").

            WHEREAS, the Company, GAP LP, GAP Coinvestment and the Major
Stockholders (as hereinafter defined) entered into a Registration Rights
Agreement, dated as of July 31, 1998 (the "Original Registration Rights
Agreement"), in connection with the purchase by GAP LP and GAP Coinvestment of
shares of Series A Convertible Preferred Stock, par value $.01 per share, of the
Company (the "Series A Preferred Stock") pursuant to a Stock Purchase Agreement,
dated July 31, 1998, by and among the Company, GAP LP and GAP Coinvestment (the
"GAP Stock Purchase Agreement");

            WHEREAS, the Company intends to issue and sell to certain investors
shares of Series B Convertible Preferred Stock, par value $.01 per share, of the
Company (the "Series B Preferred Stock");

            WHEREAS, from time to time, the Company may issue and sell
additional shares of common stock or preferred stock of the Company, subject to
the terms and conditions of the Stockholders Agreement (as defined herein); and

            WHEREAS, in connection with the issuance and sale of the shares of
Series B Preferred Stock, the Company, GAP LP, GAP Coinvestment and the Major
Stockholders desire to amend and restate the Original Registration Rights
Agreement, and the Company, GAP LP, GAP Coinvestment, the Major Stockholders
desire to have the investors purchasing the Series B Preferred Stock become a
party to this Agreement and such investors desire to become a party to this
Agreement, all in accordance with the terms and conditions set forth herein.

            The parties hereby agree as follows:

            1. Definitions. As used in this Agreement the following terms have
the meanings indicated:

                  "Affiliate" shall mean any Person who is an "affiliate" as
defined in Rule 12b-2 of the General Rules and Regulations under the Exchange
Act. The
<PAGE>



following shall be deemed to be Affiliates of GAP LP: (a) GAP LLC, the members
of GAP LLC and the limited partners of GAP LP; (b) any Affiliate of GAP LLC, the
members of GAP LLC and the limited partners of GAP LP; and (c) any limited
liability company or partnership a majority of whose members or partners, as the
case may be, are members of GAP LLC. GAP LP, GAP Coinvestment and General
Atlantic Partners 50, L.P. shall be deemed to be Affiliates of one another.

                  "Agreement" has the meaning set forth in the recitals to this
Agreement.

                  "Approved Underwriter" has the meaning set forth in Section
3(f) of this Agreement.

                  "Braddock" has the meaning set forth in the recitals to this
Agreement.

                  "Business Day" means any day other than a Saturday, Sunday or
other day on which commercial banks in the State of New York are authorized or
required by law or executive order to close.

                  "Closing Price" means, with respect to the Registrable
Securities, as of the date of determination, (a) the closing price per share of
a Registrable Security on such date published in the Wall Street Journal or, if
no such closing price on such date is published in the Wall Street Journal, the
average of the closing bid and asked prices on such date, as officially reported
on the principal national securities exchange (including, without limitation,
The Nasdaq Stock Market, Inc.) on which the Registrable Securities are then
listed or admitted to trading; or (b) if the Registrable Securities are not then
listed or admitted to trading on any national securities exchange but are
designated as national market system securities by the NASD, the last trading
price per share of a Registrable Security on such date; or (c) if there shall
have been no trading on such date or if the Registrable Securities are not so
designated, the average of the reported closing bid and asked prices of the
Registrable Securities on such date as shown by The Nasdaq Stock Market, Inc.
(or its successor) and reported by any member firm of the New York Stock
Exchange, Inc. selected by the Company; or (d) if none of (a), (b) or (c) is
applicable, a market price per share reasonably determined in good faith by the
Company's Board of Directors or, if such determination is not reasonably
satisfactory to the Designated Holder for whom such determination is being made,
by a nationally recognized investment banking firm selected by the Company and
such Designated Holder, the expenses for which shall be borne equally by the
Company and such Designated Holder.

                  "Common Stock" means the Common Stock, par value $.01 per
share, of the Company or any other equity securities of the Company into which
such
<PAGE>



securities are converted, reclassified, reconstituted or exchanged or any other
common stock of the Company.

                  "Company" has the meaning set forth in the recitals to this
Agreement.

                  "Company Underwriter" has the meaning set forth in Section
4(a) of this Agreement.

                  "Demand Registration" has the meaning set forth in Section
3(a) of this Agreement.

                  "Demand Stockholders" means each stockholder or group of
affiliated stockholders who (i) agree to become subject to this Agreement as a
Demand Stockholder by executing and delivering the instrument attached hereto as
Exhibit A and (ii) are approved as a Demand Stockholder by the Board of
Directors.

                  "Designated Holder" means each of the Major Stockholders, the
General Atlantic Stockholders, the Demand Stockholders, and the Piggy-Back
Stockholders and any transferee of any of them to whom Registrable Securities
have been transferred in accordance with the provisions of the Stockholders
Agreement and Section 10(f) of this Agreement, other than a transferee to whom
Registrable Securities have been transferred pursuant to a Registration
Statement under the Securities Act or Rule 144 or Regulation S under the
Securities Act (or any successor rule thereto).

                  "Exchange Act" means the Securities Exchange Act of 1934, as
amended, and the rules and regulations promulgated thereunder.

                  "GAP Coinvestment" has the meaning set forth in the recitals
to this Agreement.

                  "GAP LLC" means General Atlantic Partners, LLC, a Delaware
limited liability company and the general partner of GAP LP, and any successor
to such entity.

                  "GAP LP" has the meaning set forth in the recitals to this
Agreement.

                  "GAP 50" has the meaning set forth in the recitals to this
Agreement.

                  "GAP Stock Purchase Agreement" has the meaning set forth in
the recitals to this Agreement.

<PAGE>



                  "General Atlantic Stockholders" means GAP LP, GAP
Coinvestment, GAP 50 and any Permitted Transferee (as defined in the
Stockholders Agreement) of either of them to which Registrable Securities are
transferred in accordance with Section 2.2 of the Stockholders Agreement.

                  "Holders' Counsel" has the meaning set forth in Section
7(a)(i) of this Agreement.

                  "Incidental Registration" has the meaning set forth in Section
4(a) of this Agreement.

                  "Indemnified Party" has the meaning set forth in Section 8(c)
of this Agreement.

                  "Indemnifying Party" has the meaning set forth in Section 8(c)
of this Agreement.

                  "Initial Public Offering" means an underwritten initial public
offering pursuant to an effective Registration Statement filed under the
Securities Act with a per share purchase price equal to or greater than the
Conversion Price (as defined in the Certificate of Designations) then in effect
and resulting in aggregate net proceeds (after expenses and underwriting
commissions and discounts) to the Company and any selling stockholders of at
least $50,000,000.

                  "Initiating Holders" has the meaning set forth in Section 3(a)
of this Agreement.

                  "Inspector" has the meaning set forth in Section 7(a)(vii) of
this Agreement.

                  "IPO Effectiveness Date" means the date upon which the
Registration Statement with respect to the Initial Public Offering is declared
effective.

                  "JWICT" has the meaning set forth in the recitals to this
Agreement.

                  "Major Stockholders" means Walker, WDC, JWICT and Braddock and
any Permitted Transferee of any of them to which Registrable Securities are
transferred in accordance with Section 2.2 of the Stockholders Agreement.

                  "Market Price" means, on any date of determination, the
average of the daily Closing Price of the Registrable Securities for the
immediately preceding thirty (30) days on which the national securities exchange
on which the Registrable Securities are listed is open for trading.

<PAGE>



                  "NASD" has the meaning set forth in Section 7(a)(xiii) of this
Agreement.

                  "Original Registration Rights Agreement" has the meaning set
forth in the recitals to this Agreement.

                  "Person" means any individual, firm, corporation, partnership,
limited liability company, trust, incorporated or unincorporated association,
joint venture, joint stock company, limited liability company, government (or an
agency or political subdivision thereof) or other entity of any kind, and shall
include any successor (by merger or otherwise) of such entity.

                  "Piggy-Back Stockholders" means each stockholder or group of
affiliated stockholders who (i) agree to become subject to this Agreement as a
Piggy-Back Stockholder by executing and delivering the instrument attached
hereto as Exhibit B and (ii) are approved as a Piggy-Back Stockholder by the
Board of Directors.

                  "Preferred Stock" means the Series A Preferred Stock, the
Series B Preferred Stock and any other class or series of preferred stock of the
Company that is convertible into shares of Common Stock, collectively.

                  "Records" has the meaning set forth in Section 7(a)(vii) of
this Agreement.

                  "Registrable Securities" means each of the following: (a) any
and all shares of Common Stock owned by the Designated Holders or issued or
issuable upon conversion of shares of Preferred Stock or exercise of warrants,
and any shares of Common Stock issued or issuable upon conversion of any shares
of preferred stock of the Company acquired by any of the Designated Holders
after the date hereof, (b) any other shares of Common Stock acquired or owned by
any of the Designated Holders prior to the IPO Effectiveness Date, or acquired
or owned by any of the Designated Holders after the IPO Effectiveness Date if
such Designated Holder is an Affiliate of the Company and (c) any shares of
Common Stock issued or issuable to any of the Designated Holders with respect to
the Registrable Securities by way of stock dividend or stock split or in
connection with a combination of shares, recapitalization, merger, consolidation
or other reorganization or otherwise and any shares of Common Stock or voting
common stock issuable upon conversion, exercise or exchange thereof.

                  "Registration Expenses" has the meaning set forth in Section
7(d) of this Agreement.

                  "Registration Statement" means a Registration Statement filed
pursuant to the Securities Act.

<PAGE>



                  "Rule 144" has the meaning set forth in Section 9 of this
Agreement.

                  "S-3 Initiating Holders" has the meaning set forth in Section
5(a) of this Agreement.

                  "S-3 Registration" has the meaning set forth in Section 5(a)
of this Agreement.

                  "SEC" means the Securities and Exchange Commission or any
similar agency then having jurisdiction to enforce the Securities Act.

                  "Securities Act" means the Securities Act of 1933, as amended,
and the rules and regulations promulgated thereunder.

                  "Series A Preferred Stock" has the meaning set forth in the
recitals to this Agreement.

                  "Series B Preferred Stock" has the meaning set forth in the
recitals to this Agreement.

                  "Stockholders Agreement" means the Amended and Restated
Stockholders Agreement, dated as of the date hereof, among the Company, GAP LP,
GAP Coinvestment, the Major Stockholders and certain other stockholders of the
Company.

                  "Walker" has the meaning set forth in the recitals to this
Agreement.

                  "WDC" has the meaning set forth in the recitals to this
Agreement.

            2. General; Securities Subject to this Agreement.

                  (a) Grant of Rights. The Company hereby grants registration
rights to the Major Stockholders, the General Atlantic Stockholders, the Demand
Stockholders and the Piggy-Back Stockholders upon the terms and subject to the
conditions set forth in this Agreement.

                  (b) Registrable Securities. For the purposes of this
Agreement, Registrable Securities will cease to be Registrable Securities when
(i) a Registration Statement covering such Registrable Securities has been
declared effective under the Securities Act by the SEC and such Registrable
Securities have been disposed of pursuant to such effective Registration
Statement, (ii) such Registrable Securities

<PAGE>



shall have been distributed pursuant to Rule 144, or (iii) the entire amount of
Registrable Securities proposed to be sold in a single sale, in the opinion of
counsel satisfactory to the Company and the Designated Holder, each in their
reasonable judgment, may be distributed to the public without any limitation as
to volume pursuant to Rule 144 (or any successor provision then in effect) under
the Securities Act or (iv) the Registrable Securities are proposed to be sold or
distributed by a Person not entitled to the registration rights granted by this
Agreement.

                  (c) Holders of Registrable Securities. A Person is deemed to
be a holder of Registrable Securities whenever such Person owns of record
Registrable Securities, or holds an option to purchase, or a security
convertible into or exercisable or exchangeable for, Registrable Securities
whether or not such acquisition or conversion has actually been effected. If the
Company receives conflicting instructions, notices or elections from two or more
Persons with respect to the same Registrable Securities, the Company may act
upon the basis of the instructions, notice or election received from the
registered owner of such Registrable Securities. Registrable Securities issuable
upon exercise of an option or upon conversion of another security shall be
deemed outstanding for the purposes of this Agreement.

            3. Demand Registration.

                  (a) Request for Demand Registration. At any time after the IPO
Effectiveness Date, each of (i) one or more of the General Atlantic Stockholders
as a group, acting through GAP LLC or its written designee, (ii) one or more of
the Major Stockholders as a group, acting through Walker or his written
designee, or (iii) one or more of the Demand Stockholders, acting through its
representative identified on the instrument executed by it in the form attached
hereto as Exhibit A or such representative's written designee (the "Initiating
Holders"), may make a written request to the Company to register, under the
Securities Act (other than pursuant to a Registration Statement on Form S-4 or
S-8 or any successor thereto) (a "Demand Registration"), the number of
Registrable Securities stated in such request; provided, however, that the
Company shall not be obligated to effect more than one Demand Registration for
the General Atlantic Stockholders, one Demand Registration for the Major
Stockholders and one Demand Registration for each of the Demand Stockholders
pursuant to this Section 3. For purposes of the preceding sentence, two or more
Registration Statements filed in response to one demand shall be counted as one
Registration Statement. If at the time of any request to register Registrable
Securities pursuant to this Section 3(a), the Company is engaged in, or has
fixed plans to engage in within 90 days of the time of such request, a
registered public offering or is engaged in or has fixed plans to engage in any
other activity which, in the good faith determination of the Board of Directors
of the Company, would be adversely affected in any material respect by the
requested registration, then the Company may at its option direct that such
request be delayed for a reasonable period not in excess of three months from
the effective date of such offering or the date of completion of such other

<PAGE>



material activity, as the case may be, such right to delay a request to be
exercised by the Company not more than once in any one-year period. In addition,
the Company shall not be required to effect any registration within 90 days
after the effective date of any other Registration Statement of the Company.
Each request for a Demand Registration by the Initiating Holders shall state the
amount of the Registrable Securities proposed to be sold and the intended method
of disposition thereof. Upon a request for a Demand Registration, the Company
shall promptly take such steps as are necessary or appropriate to prepare for
the registration of the Registrable Securities to be registered.

                  (b) Incidental or "Piggy-Back" Rights with Respect to a Demand
Registration. Each of the Designated Holders (other than Initiating Holders
which have requested the relevant registration under Section 3(a)) may offer its
or his Registrable Securities under any Demand Registration pursuant to this
Section 3(b). Within 10 days after the receipt of a request for a Demand
Registration from an Initiating Holder, the Company shall (i) give written
notice thereof to all of the Designated Holders (other than Initiating Holders
which have requested such registration under Section 3(a)) and (ii) subject to
Section 3(e), include in such registration all of the Registrable Securities
held by such Designated Holders from whom the Company has received a written
request for inclusion therein within 10 days of the receipt by such Designated
Holders of such written notice referred to in clause (i) above. Each such
request by such Designated Holders shall specify the number of Registrable
Securities proposed to be registered and the intended method of disposition
thereof. The failure of any Designated Holder to respond within such 10-day
period referred to in clause (ii) above shall be deemed to be a waiver of such
Designated Holder's rights under this Section 3 with respect to such Demand
Registration, provided that any Designated Holder may waive its rights under
this Section 3 prior to the expiration of such 10-day period by giving written
notice to the Company, with a copy to the Initiating Holders. If a Designated
Holder sends the Company a written request for inclusion of part or all of such
Designated Holder's Registrable Securities in a registration, such Designated
Holder shall not be entitled to withdraw or revoke such request without the
prior written consent of the Company in its sole discretion unless, as a result
of facts or circumstances arising after the date on which such request was made
relating to the Company or to market conditions, such Designated Holder
reasonably determines that participation in such registration would have a
material adverse effect on such Designated Holder.

                  (c) Effective Demand Registration. The Company shall use its
reasonable best efforts to cause any such Demand Registration to become and
remain effective not later than ninety (90) days after it receives a request
under Section 3(a) hereof. A registration shall not constitute a Demand
Registration until it has become effective and remains continuously effective
for the lesser of (i) the period during which all Registrable Securities
registered in the Demand Registration are sold and (ii) 90 days; provided,
however, that a registration shall not constitute a Demand

<PAGE>



Registration if (x) after such Demand Registration has become effective, such
registration or the related offer, sale or distribution of Registrable
Securities thereunder is interfered with by any stop order, injunction or other
order or requirement of the SEC or other governmental agency or court for any
reason not attributable to the Initiating Holders and such interference is not
thereafter eliminated or (y) the conditions specified in the underwriting
agreement, if any, entered into in connection with such Demand Registration are
not satisfied or waived, other than by reason of a failure by any Designated
Holder.

                  (d) Expenses. In any registration initiated as a Demand
Registration, the Company shall pay all Registration Expenses in connection
therewith, whether or not such Demand Registration becomes effective.

                  (e) Underwriting Procedures. If the Company or the Initiating
Holders holding a majority of the Registrable Securities held by all of the
Initiating Holders to which the requested Demand Registration relates so elect,
the Company shall use reasonable best efforts to cause such Demand Registration
to be in the form of a firm commitment underwritten offering and the managing
underwriter or underwriters selected for such offering shall be the Approved
Underwriter selected in accordance with Section 3(f). In connection with any
Demand Registration under this Section 3 involving an underwritten offering,
none of the Registrable Securities held by any Designated Holder making a
request for inclusion of such Registrable Securities pursuant to Section 3(b)
hereof shall be included in such underwritten offering unless such Designated
Holder accepts the terms of the offering as agreed upon by the Company, the
Initiating Holders and the Approved Underwriter. If the Approved Underwriter
advises the Company in writing that in its opinion the aggregate amount of such
Registrable Securities requested to be included in such offering is sufficiently
large to have a material adverse effect on the success of such offering, then
the Company shall include in such registration only the aggregate amount of
Registrable Securities that in the opinion of the Approved Underwriter may be
sold without any such material adverse effect and shall reduce the amount of
Registrable Securities to be included in such registration, first as to the
Company and, second as to the Initiating Holders and any other Designated
Holders who requested inclusion of their Registrable Securities pursuant to
Section 3(b), pro rata based on the number of Registrable Securities owned by
each such Initiating Holder and Designated Holder.

                  (f) Selection of Underwriters. If any Demand Registration or
S-3 Registration, as the case may be, of Registrable Securities is in the form
of an underwritten offering, the Company shall select and obtain an investment
banking firm of national reputation to act as the managing underwriter of the
offering (the "Approved Underwriter"); provided, however, that the Approved
Underwriter shall, in any case, also be approved by the Initiating Holders or
S-3 Initiating Holders, as the case may be, such approval not to be unreasonably
withheld.

<PAGE>



            4. Incidental or "Piggy-Back" Registration.

                  (a) Request for Incidental Registration. At any time after the
IPO Effectiveness Date, if the Company proposes to file a Registration Statement
under the Securities Act with respect to an offering by the Company for its own
account (other than a Registration Statement on Form S-4 or S-8 or any successor
thereto), then the Company shall give written notice of such proposed filing to
each of the Designated Holders at least 30 days before the anticipated filing
date, and such notice shall describe the proposed registration and distribution
and offer such Designated Holders the opportunity to register the number of
Registrable Securities as each such holder may request (an "Incidental
Registration"). The Company shall, and shall use its best efforts (within 10
days of the notice provided for in the preceding sentence) to cause the managing
underwriter or underwriters of a proposed underwritten offering (the "Company
Underwriter") to permit each of the Designated Holders who have requested in
writing to participate in the Incidental Registration to include its or his
Registrable Securities in such offering on the same terms and conditions as the
securities of the Company included therein. In connection with any Incidental
Registration under this Section 4(a) involving an underwritten offering, the
Company shall not be required to include any Registrable Securities in such
underwritten offering unless the holders thereof accept the terms of the
underwritten offering as agreed upon between the Company and the Company
Underwriter, and then only in such quantity as will not, in the opinion of the
Company Underwriter, jeopardize the success of the offering by the Company. If
in the written opinion of the Company Underwriter the registration of all or
part of the Registrable Securities which the Designated Holders have requested
to be included would materially adversely affect the success of such offering,
then the Company shall be required to include in such Incidental Registration,
to the extent of the amount that the Company Underwriter believes may be sold
without causing such adverse effect, first, all of the securities to be offered
for the account of the Company; second, the Registrable Securities to be offered
for the account of the Designated Holders pursuant to this Section 4, pro rata
based on the number of Registrable Securities owned by each such Designated
Holder; and third, any other securities requested to be included in such
underwritten offering.

                  (b) Expenses. The Company shall bear all Registration Expenses
in connection with any Incidental Registration pursuant to this Section 4,
whether or not such Incidental Registration becomes effective.

            5. Form S-3 Registration.

                  (a) Request for a Form S-3 Registration. Upon the Company
becoming eligible for use of Form S-3 in connection with a public offering of
its securities, in the event that the Company shall receive from (i) one or more
of the General Atlantic Stockholders as a group, acting through GAP LLC or its
written

<PAGE>



designee, (ii) one or more of the Major Stockholders, as a group, acting through
Walker or his written designee, or (iii) one or more of the Demand Stockholders,
acting through its representative identified on the instrument executed by it in
the form attached hereto as Exhibit A or such representative's written designee
(the "S-3 Initiating Holders"), a written request that the Company register,
under the Securities Act, on Form S-3 (or any successor form then in effect) (an
"S-3 Registration"), all or a portion of the Registrable Securities owned by
such S-3 Initiating Holders, the Company shall give written notice of such
request to all of the Designated Holders (other than S-3 Initiating Holders
which have requested an S-3 Registration under this Section 5(a)) at least 30
days before the anticipated filing date of such Form S-3, and such notice shall
describe the proposed registration and offer such Designated Holders the
opportunity to register the number of Registrable Securities as each such
Designated Holder may request in writing to the Company, given within 15 days
after their receipt from the Company of the written notice of such registration.
The Company shall (i) take such steps as are necessary or appropriate to prepare
for the registration of the Registrable Securities to be registered and (ii)
subject to Section 5(b), use reasonable best efforts to (x) cause such
registration pursuant to this Section 5(a) to become and remain effective as
soon as practicable, but in any event not later than ninety (90) days after it
receives a request therefor and (y) include in such offering the Registrable
Securities of the Designated Holders (other than S-3 Initiating Holders which
have requested an S-3 Registration under this Section 5(a)) who have requested
in writing to participate in such registration on the same terms and conditions
as the Registrable Securities of the S-3 Initiating Holders included therein.

                  (b) Form S-3 Underwriting Procedures. If the Company or the
S-3 Initiating Holders holding a majority of the Registrable Securities held by
all of the S-3 Initiating Holders to which the requested S-3 Registration
relates so elect, the Company shall use reasonable best efforts to cause such
S-3 Registration pursuant to this Section 5 to be in the form of a firm
commitment underwritten offering and the managing underwriter or underwriters
selected for such offering shall be the Approved Underwriter selected in
accordance with Section 3(f). In connection with any S-3 Registration under
Section 5(a) involving an underwritten offering, the Company shall not be
required to include any Registrable Securities in such underwritten offering
unless the Designated Holders thereof accept the terms of the underwritten
offering as agreed upon between the Company, the Approved Underwriter and the
S-3 Initiating Holders. If in the written opinion of the Approved Underwriter
the registration of all or part of the Registrable Securities which the S-3
Initiating Holders and the other Designated Holders have requested to be
included would materially adversely affect the success of such public offering,
then the Company shall be required to include in the underwritten offering, to
the extent of the amount that the Approved Underwriter believes may be sold
without causing such adverse effect, first, the Registrable Securities to be
offered for the account of the S-3 Initiating Holders and the other Designated
Holders who requested inclusion of their Registrable Securities pursuant to
Section 5(a), pro rata based on the number of Registrable Securities owned by
each

<PAGE>



such S-3 Initiating Holder and Designated Holder and second, any other
securities requested to be included in such underwritten offering.

                  (c) Limitations on Form S-3 Registrations. If at the time of
any request to register Registrable Securities pursuant to Section 5(a), the
Company is engaged in, or has fixed plans to engage in within 90 days of the
time of such request, a registered public offering or is engaged or has fixed
plans to engage in any other activity which, in the good faith determination of
the Board of Directors of the Company, would be adversely affected in any
material respect by the requested S-3 Registration then the Company may at its
option direct that such request be delayed for a reasonable period not in excess
of three months from the effective date of such offering or the date of
completion of such other material activity, as the case may be, such right to
delay a request to be exercised by the Company not more than once in any
one-year period. In addition, the Company shall not be required to effect any
registration pursuant to Section 5(a) (i) within three months after the
effective date of any other Registration Statement of the Company, (ii) if
within the 12-month period preceding the date of such request, the Company has
effected two registrations on Form S-3 pursuant to Section 5(a) and all of the
Registrable Securities registered therein have been sold, (iii) if Form S-3 is
not available for such offering by the S-3 Initiating Holders or (iv) if the S-3
Initiating Holders, together with the Designated Holders (other than S-3
Initiating Holders which have requested an S-3 Registration under Section 5(a))
registering Registrable Securities in such registration, propose to sell their
Registrable Securities at an aggregate price (calculated based upon the Market
Price of the Registrable Securities on the date of filing of the Form S-3 with
respect to such Registrable Securities) to the public of less than $2,500,000.

                  (d) Expenses. In connection with any registration pursuant to
this Section 5, the Company shall pay all Registration Expenses, whether or not
such registration becomes effective.

                  (e) No Demand Registration. No registration requested by any
Designated Holder pursuant to this Section 5 shall be deemed a Demand
Registration pursuant to Section 3.

            6. Holdback Agreements.

                  (a) Restrictions on Public Sale by Designated Holders. If and
to the extent requested by the Company, the Initiating Holders or the S-3
Initiating Holders, as the case may be, in the case of a non-underwritten public
offering or if and to the extent requested by the Approved Underwriter or the
Company Underwriter, as the case may be, in the case of an underwritten public
offering, each Designated Holder of Registrable Securities agrees (i) not to
effect any public sale or distribution of any Registrable Securities or of any
securities convertible into or exchangeable or exercisable for such Registrable
Securities, including a sale pursuant to Rule 144, and

<PAGE>



(ii) not to make any request for a Demand Registration or S-3 Registration under
this Agreement, during the 120-day period or such shorter period agreed upon by
such Designated Holder and the requesting party beginning thirty days prior to
the anticipated effective date of such Registration Statement (except as part of
such registration).

                  (b) Restrictions on Public Sale by the Company. The Company
agrees not to effect any public sale or distribution of any of its equity
securities, or any securities convertible into or exchangeable or exercisable
for such securities (except pursuant to such registrations on Form S-4 or S-8 or
any successor thereto), during the period beginning on the effective date of any
Registration Statement in which the Designated Holders of Registrable Securities
are participating and ending on the earlier of (i) the date on which all
Registrable Securities registered on such Registration Statement are sold and
(ii) 90 days after the effective date of such Registration Statement (except as
part of such registration).

            7. Registration Procedures.

                  (a) Obligations of the Company. Whenever registration of
Registrable Securities has been requested pursuant to Section 3, Section 4 or
Section 5 of this Agreement, the Company shall use reasonable best efforts to
effect the registration and sale of such Registrable Securities in accordance
with the intended method of distribution thereof as quickly as practicable, and
in connection with any such request, the Company shall, as expeditiously as
possible:

                        (i) prepare and file with the SEC a Registration
Statement on any form for which the Company then qualifies or which counsel for
the Company shall deem appropriate and which form shall be available for the
sale of such Registrable Securities in accordance with the intended method of
distribution thereof, and use its best efforts to cause such Registration
Statement to become effective; provided, however, that (x) before filing a
Registration Statement or prospectus or any amendments or supplements thereto,
the Company shall provide one counsel selected by the Designated Holders holding
a majority of the Registrable Securities being registered in such registration
("Holders' Counsel") and any other Inspector with an adequate opportunity to
review and comment on such Registration Statement and each prospectus included
therein (and each amendment or supplement thereto) to be filed with the SEC,
subject to such documents being under the Company's control, and (y) the Company
shall notify the Holders' Counsel and each seller of Registrable Securities of
any stop order issued or threatened by the SEC and take all reasonable action
required to prevent the entry of such stop order or to remove it if entered;

                        (ii) prepare and file with the SEC such amendments and
supplements to such Registration Statement and the prospectus used in connection
therewith as may be necessary to keep such Registration Statement effective for
the

<PAGE>



lesser of (x) 90 days and (y) such shorter period which will terminate when all
Registrable Securities covered by such Registration Statement have been sold,
and comply with the provisions of the Securities Act with respect to the
disposition of all securities covered by such Registration Statement during such
period in accordance with the intended methods of disposition by the sellers
thereof set forth in such Registration Statement;

                        (iii) as soon as reasonably practicable, furnish to each
seller of Registrable Securities, prior to filing a Registration Statement, at
least one copy of such Registration Statement as is proposed to be filed, and
thereafter such number of copies of such Registration Statement, each amendment
and supplement thereto (in each case including all exhibits thereto), and the
prospectus included in such Registration Statement (including each preliminary
prospectus) as each such seller may reasonably request in order to facilitate
the disposition of the Registrable Securities owned by such seller;

                        (iv) register or qualify such Registrable Securities
under such other securities or "blue sky" laws of such jurisdictions as any
seller of Registrable Securities may reasonably request, and to continue such
qualification in effect in such jurisdiction for as long as permissible pursuant
to the laws of such jurisdiction, or for as long as any such seller requests or
until all of such Registrable Securities are sold, whichever is shortest, and do
any and all other acts and things which may be reasonably necessary or advisable
to enable any such seller to consummate the disposition in such jurisdictions of
the Registrable Securities owned by such seller; provided, however, that the
Company shall not be required to (x) qualify generally to do business in any
jurisdiction where it would not otherwise be required to qualify but for this
Section 7(a)(iv), (y) subject itself to taxation in any such jurisdiction or (z)
consent to general service of process in any such jurisdiction;

                        (v) notify each seller of Registrable Securities at any
time when a prospectus relating thereto is required to be delivered under the
Securities Act, upon discovery that, or upon the happening of any event as a
result of which, the prospectus included in such Registration Statement contains
an untrue statement of a material fact or omits to state any material fact
required to be stated therein or necessary to make the statements therein not
misleading in light of the circumstances under which they were made, and the
Company shall promptly prepare a supplement or amendment to such prospectus and
furnish to each seller a reasonable number of copies of such supplement to or an
amendment of such prospectus as may be necessary so that, after delivery to the
purchasers of such Registrable Securities, such prospectus shall not contain an
untrue statement of a material fact or omit to state any material fact required
to be stated therein or necessary to make the statements therein not misleading
in light of the circumstances under which they were made;

<PAGE>



                        (vi) enter into and perform customary agreements
(including an underwriting agreement in customary form with the Approved
Underwriter or Company Underwriter, if any, selected as provided in Section 3,
Section 4 or Section 5, as the case may be) and take such other actions as are
prudent and reasonably required in order to expedite or facilitate the
disposition of such Registrable Securities;

                        (vii) make available at reasonable times for inspection
by any seller of Registrable Securities, any managing underwriter participating
in any disposition of such Registrable Securities pursuant to a Registration
Statement, Holders' Counsel and any attorney, accountant or other agent retained
by any such seller or any managing underwriter (each, an "Inspector" and
collectively, the "Inspectors"), all financial and other records, pertinent
corporate documents and properties of the Company and its subsidiaries
(collectively, the "Records") as shall be reasonably necessary to enable them to
exercise their due diligence responsibility, and cause the Company's and its
subsidiaries' officers, directors and employees, and the independent public
accountants of the Company, to supply all information reasonably requested by
any such Inspector in connection with such Registration Statement. Records that
the Company determines, in good faith, to be confidential and which it notifies
the Inspectors are confidential shall not be disclosed by the Inspectors (and
the Inspectors shall confirm their agreement in writing in advance to the
Company if the Company shall so request) unless (x) the disclosure of such
Records is necessary, in the Company's judgment, to avoid or correct a
misstatement or omission in the Registration Statement, (y) the release of such
Records is ordered pursuant to a subpoena or other order from a court of
competent jurisdiction after exhaustion of all appeals therefrom or (z) the
information in such Records was known to the Inspectors on a non-confidential
basis prior to its disclosure by the Company or has been made generally
available to the public. Each seller of Registrable Securities agrees that it
shall, upon learning that disclosure of such Records is sought in a court of
competent jurisdiction, give notice to the Company and allow the Company, at the
Company's expense, to undertake appropriate action to prevent disclosure of the
Records deemed confidential;

                        (viii) if such sale is pursuant to an underwritten
offering, use reasonable best efforts to obtain a "cold comfort" letter from the
Company's independent public accountants in customary form and covering such
matters of the type customarily covered by "cold comfort" letters as Holders'
Counsel or the managing underwriter reasonably request;

                        (ix) use its reasonable best efforts to furnish, at the
request of any seller of Registrable Securities on the date such securities are
delivered to the underwriters for sale pursuant to such registration or, if such
securities are not being sold through underwriters, on the date the Registration
Statement with respect to such securities becomes effective, an opinion, dated
such date, of counsel representing

<PAGE>



the Company for the purposes of such registration, addressed to the
underwriters, if any, and to the seller making such request, covering such legal
matters with respect to the registration in respect of which such opinion is
being given as such seller may reasonably request and are customarily included
in such opinions;

                        (x) otherwise use reasonable best efforts to comply with
all applicable rules and regulations of the SEC, and make available to its
security holders, as soon as reasonably practicable but no later than fifteen
(15) months after the effective date of the Registration Statement, an earnings
statement covering a period of twelve (12) months beginning after the effective
date of the Registration Statement, in a manner which satisfies the provisions
of Section 11(a) of the Securities Act and Rule 158 thereunder;

                        (xi) cause all such Registrable Securities to be listed
on each securities exchange on which similar securities issued by the Company
are then listed, provided that the applicable listing requirements are
satisfied;

                        (xii) keep Holders' Counsel advised as to the initiation
and progress of any registration under Section 3, Section 4 or Section 5
hereunder;

                        (xiii) cooperate with each seller of Registrable
Securities and each underwriter participating in the disposition of such
Registrable Securities and their respective counsel in connection with any
filings required to be made with the National Association of Securities Dealers,
Inc. (the "NASD"); and

                        (xiv) take all other steps reasonably necessary to
effect the registration of the Registrable Securities contemplated hereby.

                  (b) Seller Information. The Company may require each seller of
Registrable Securities as to which any registration is being effected to furnish
to the Company such information regarding the distribution of such securities as
the Company may from time to time reasonably request in writing.

                  (c) Notice to Discontinue. Each Designated Holder of
Registrable Securities agrees that, upon receipt of any notice from the Company
of the happening of any event of the kind described in Section 7(a)(v), such
Designated Holder shall forthwith discontinue disposition of Registrable
Securities pursuant to the Registration Statement covering such Registrable
Securities until such Designated Holder's receipt of the copies of the
supplemented or amended prospectus contemplated by Section 7(a)(v) and, if so
directed by the Company, such Designated Holder shall deliver to the Company (at
the Company's expense) all copies, other than permanent file copies then in such
Designated Holder's possession, of the prospectus covering such Registrable
Securities which is current at the time of receipt of such notice. If the
Company shall give any such notice, the Company shall extend the period during
which

<PAGE>



such Registration Statement shall be maintained effective pursuant to this
Agreement (including, without limitation, the period referred to in Section
7(a)(ii)) by the number of days during the period from and including the date of
the giving of such notice pursuant to Section 7(a)(v) to and including the date
when sellers of such Registrable Securities under such Registration Statement
shall have received the copies of the supplemented or amended prospectus
contemplated by and meeting the requirements of Section 7(a)(v).

                  (d) Registration Expenses. The Company shall pay all expenses
arising from or incident to its performance of, or compliance with, this
Agreement, including, without limitation, (i) SEC, stock exchange and NASD
registration and filing fees, (ii) all fees and expenses incurred in complying
with securities or "blue sky" laws (including reasonable fees, charges and
disbursements of counsel to any underwriter incurred in connection with "blue
sky" qualifications of the Registrable Securities), (iii) all printing,
messenger and delivery expenses, (iv) the fees, charges and disbursements of
counsel to the Company and of its independent public accountants and any other
accounting fees, charges and expenses incurred by the Company (including,
without limitation, any expenses arising from any "cold comfort" letters or any
special audits incident to or required by any registration or qualification) and
any legal fees, charges and expenses incurred by the Company and, in the case of
a Demand Registration, the Initiating Holders and (v) any liability insurance or
other premiums for insurance for the benefit of the Company or its directors and
officers obtained in connection with any Demand Registration or piggy-back
registration thereon, Incidental Registration or S-3 Registration pursuant to
the terms of this Agreement, regardless of whether such Registration Statement
is declared effective. All of the expenses described in the preceding sentence
of this Section 7(d) are referred to herein as "Registration Expenses."
"Registration Expenses" shall not include, and the Designated Holders of
Registrable Securities sold pursuant to a Registration Statement shall bear, the
expense of any broker's commission or underwriter's discount or commission
relating to registration and sale of such Holders' Registrable Securities and
any fees and expenses of counsel to or accountants or other advisors for, such
Designated Holders, all of which shall be borne by the Designated Holders,
provided, however, that nothing in this Section 7(d) shall be construed to
supersede the Company's obligations with respect to the payment of expenses in
connection with a Demand Registration or an Incidental Registration, as
described in Sections 3(d) and 4(b) above and clause (iv) above.

            8. Indemnification; Contribution.

                  (a) Indemnification by the Company. The Company agrees to
indemnify and hold harmless each Designated Holder and each Person who controls
(within the meaning of Section 15 of the Securities Act) such Designated Holder
from and against any and all losses, claims, damages, liabilities and expenses
(including reasonable costs of investigation) incurred by them arising out of or
based

<PAGE>



upon any untrue, or allegedly untrue, statement of a material fact contained in
any Registration Statement, prospectus or preliminary prospectus (as amended or
supplemented if the Company shall have furnished any amendments or supplements
thereto) or arising out of or based upon any omission or alleged omission to
state therein a material fact required to be stated therein or necessary to make
the statements therein not misleading, except insofar as the same are made in
reliance upon, caused by or contained in any information concerning such
Designated Holder furnished in writing to the Company by or on behalf of such
Designated Holder expressly for use therein, including, without limitation, the
information furnished to the Company pursuant to Section 8(b). The Company shall
also provide customary indemnities to any underwriters of the Registrable
Securities and each Person who controls such underwriters (within the meaning of
Section 15 of the Securities Act) to the same extent as provided above with
respect to the indemnification of the Designated Holders of Registrable
Securities.

                  (b) Indemnification by Designated Holders. In connection with
any Registration Statement in which a Designated Holder is participating
pursuant to Section 3, Section 4 or Section 5 hereof, each such Designated
Holder shall promptly furnish to the Company in writing such information with
respect to such Designated Holder as the Company may reasonably request or as
may be required by law for use in connection with any such Registration
Statement or prospectus and all information required to be disclosed in order to
make the information previously furnished to the Company by such Designated
Holder not materially misleading or necessary to cause such Registration
Statement not to omit a material fact with respect to such Designated Holder
necessary in order to make the statements therein not misleading. Each
Designated Holder agrees to indemnify and hold harmless the Company, any
underwriter retained by the Company and each Person who controls the Company or
such underwriter (within the meaning of Section 15 of the Securities Act) to the
same extent as the foregoing indemnity from the Company to the Designated
Holders, but only with respect to any such information with respect to such
Designated Holder furnished in writing to the Company by or on behalf of such
Designated Holder expressly for use therein, including, without limitation, the
information furnished to the Company pursuant to this Section 8(b); provided,
however, that the total amount to be indemnified by such Designated Holder
pursuant to this Section 8(b) shall be limited to the net proceeds received by
such Designated Holder in the offering to which the Registration Statement or
prospectus relates.

                  (c) Conduct of Indemnification Proceedings. Any Person
entitled to indemnification hereunder (the "Indemnified Party") agrees to give
prompt written notice to the indemnifying party (the "Indemnifying Party") after
the receipt by the Indemnified Party of any written notice of the commencement
of any action, suit, proceeding or investigation or threat thereof made in
writing for which the Indemnified Party intends to claim indemnification or
contribution pursuant to this Agreement; provided, however, that the failure so
to notify the Indemnifying Party shall not relieve

<PAGE>



the Indemnifying Party of any liability that it may have to the Indemnified
Party hereunder; except to the extent that the Indemnifying Party is prejudiced
or otherwise forfeits substantive rights or defenses by reason of such failure.
If notice of commencement of any such action is given to the Indemnifying Party
as above provided, the Indemnifying Party shall be entitled to participate in
and, to the extent it may wish, jointly with any other Indemnifying Party
similarly notified, to assume the defense of such action at its own expense,
with counsel chosen by it and reasonably satisfactory to such Indemnified Party.
The Indemnified Party shall have the right to employ separate counsel in any
such action and participate in the defense thereof, but the fees and expenses of
such counsel shall be paid by the Indemnified Party unless (i) the Indemnifying
Party agrees to pay the same, (ii) the Indemnifying Party fails to assume the
defense of such action with counsel reasonably satisfactory to the Indemnified
Party or (iii) the named parties to any such action (including any impleaded
parties) include both the Indemnifying Party and the Indemnified Party and such
parties have been advised by such counsel that either (x) representation of such
Indemnified Party and the Indemnifying Party by the same counsel would be
inappropriate under applicable standards of professional conduct or (y) there
may be one or more legal defenses available to the Indemnified Party which are
different from or additional to those available to the Indemnifying Party. In
any of such cases, the Indemnifying Party shall not have the right to assume the
defense of such action on behalf of such Indemnified Party, it being understood,
however, that the Indemnifying Party shall not be liable for the fees and
expenses of more than one separate firm of attorneys (in addition to any local
counsel) for all Indemnified Parties. No Indemnifying Party shall be liable for
any settlement entered into without its written consent, which consent shall not
be unreasonably withheld. No Indemnifying Party shall, without the consent of
such Indemnified Party, effect any settlement of any pending or threatened
proceeding in respect of which such Indemnified Party is a party and indemnity
has been sought hereunder by such Indemnified Party, unless such settlement
includes an unconditional release of such Indemnified Party from all liability
for claims that are the subject matter of such proceeding.

                  (d) Contribution. If the indemnification provided for in this
Section 8 from the Indemnifying Party is unavailable to an Indemnified Party
hereunder in respect of any losses, claims, damages, liabilities or expenses
referred to therein, then the Indemnifying Party, in lieu of indemnifying such
Indemnified Party, shall contribute to the amount paid or payable by such
Indemnified Party as a result of such losses, claims, damages, liabilities or
expenses in such proportion as is appropriate to reflect the relative fault of
the Indemnifying Party and Indemnified Party in connection with the actions
which resulted in such losses, claims, damages, liabilities or expenses, as well
as any other relevant equitable considerations. The relative faults of such
Indemnifying Party and Indemnified Party shall be determined by reference to,
among other things, whether any action in question, including any untrue or
alleged untrue statement of a material fact or omission or alleged omission to
state a material fact, has been made by, or relates to information supplied by,
such Indemnifying Party or

<PAGE>



Indemnified Party, and the parties' relative intent, knowledge, access to
information and opportunity to correct or prevent such action. The amount paid
or payable by a party as a result of the losses, claims, damages, liabilities
and expenses referred to above shall be deemed to include, subject to the
limitations set forth in Sections 8(a), 8(b) and 8(c), any legal or other fees,
charges or expenses reasonably incurred by such party in connection with any
investigation or proceeding; provided that the total amount to be indemnified by
such Designated Holder shall be limited to the net proceeds received by such
Designated Holder in the offering.

            The parties hereto agree that it would not be just and equitable if
contribution pursuant to this Section 8(d) were determined by pro rata
allocation or by any other method of allocation which does not take account of
the equitable considerations referred to in the immediately preceding paragraph.
No Person guilty of fraudulent misrepresentation (within the meaning of Section
11(f) of the Securities Act) shall be entitled to contribution from any Person
who was not guilty of such fraudulent misrepresentation.

            9. Rule 144. The Company covenants that from and after the IPO
Effectiveness Date it shall (a) file any reports required to be filed by it
under the Exchange Act and (b) take such further action as each Designated
Holder of Registrable Securities may reasonably request (including providing any
information necessary to comply with Rule 144), all to the extent required from
time to time to enable such Designated Holder to sell Registrable Securities
without registration under the Securities Act within the limitation of the
exemptions provided by (i) Rule 144 under the Securities Act, as such rule may
be amended from time to time ("Rule 144"), or (ii) any similar rules or
regulations hereafter adopted by the SEC. The Company shall, upon the request of
any Designated Holder of Registrable Securities, deliver to such Designated
Holder a written statement as to whether it has complied with such requirements.

            10. Miscellaneous.

                  (a) Recapitalizations, Exchanges, etc. The provisions of this
Agreement shall apply, to the full extent set forth herein with respect to (i)
the shares of Common Stock, (ii) any and all shares of voting common stock of
the Company into which the shares of Common Stock are converted, exchanged or
substituted in any recapitalization or other capital reorganization by the
Company and (iii) any and all equity securities of the Company or any successor
or assign of the Company (whether by merger, consolidation, sale of assets or
otherwise) which may be issued in respect of, in conversion of, in exchange for
or in substitution of, the shares of Common Stock and shall be appropriately
adjusted for any stock dividends, splits, reverse splits, combinations,
recapitalizations and the like occurring after the date hereof. The Company
shall cause any successor or assign (whether by sale, merger or otherwise) to

<PAGE>



enter into a new registration rights agreement with the Designated Holders on
terms substantially the same as this Agreement as a condition of any such
transaction.

                  (b) No Inconsistent Agreements. The Company represents and
warrants that it has not granted to any Person the right to request or require
the Company to register any securities issued by the Company, other than the
rights granted to the Designated Holders herein. The Company shall not enter
into any agreement with respect to its securities that is inconsistent with the
rights granted to the Designated Holders in this Agreement or grant any
additional registration rights to any Person or with respect to any securities
which are not Registrable Securities which are prior in right to or inconsistent
with the rights granted in this Agreement.

                  (c) Remedies. The Designated Holders, in addition to being
entitled to exercise all rights granted by law, including recovery of damages,
shall be entitled to specific performance of their rights under this Agreement.
The Company agrees that monetary damages would not be adequate compensation for
any loss incurred by reason of a breach by it of the provisions of this
Agreement and hereby agrees to waive in any action for specific performance the
defense that a remedy at law would be adequate.

                  (d) Amendments and Waivers. Except as otherwise provided
herein, the provisions of this Agreement may not be amended, modified or
supplemented, and waivers or consents to departures from the provisions hereof
may not be given unless consented to in writing by (i) the Company, (ii) the
Major Stockholders holding Registrable Securities representing (after giving
effect to any adjustments) at least a majority of the aggregate number of
Registrable Securities owned by all of the Major Stockholders, (iii) the General
Atlantic Stockholders holding Registrable Securities representing (after giving
effect to any adjustments) at least a majority of the aggregate number of
Registrable Securities owned by all of the General Atlantic Stockholders, (iv)
the holders holding Registrable Securities representing (after giving effect to
any adjustments) at least a majority of the aggregate number of Registrable
Securities owned by each Demand Stockholder and, if the amendment, supplement,
modification, waiver or consent adversely affects the rights or obligations of
the Piggy-Back Stockholders, then also by (v) the holders holding Registrable
Securities representing (after giving effect to any adjustments) at least a
majority of the aggregate number of Registrable Securities owned by each
Piggy-Back Stockholder. Any such written consent shall be binding upon the
Company and all of the Designated Holders.

                  (e) Notices. All notices, demands and other communications
provided for or permitted hereunder shall be made in writing and shall be made
by registered or certified first-class mail, return receipt requested,
telecopier, courier service, overnight mail or personal delivery:

<PAGE>



                        (i)    if to the Company or the Major Stockholders:

                               priceline.com Incorporated
                               4 High Ridge Park
                               Stamford, Connecticut 06905
                               Telecopy: (203) 595-8344
                               Attention: Mr. Paul E. Francis
                                          Melissa M. Taub, Esq.

                               with a copy to:

                               Skadden, Arps, Slate, Meagher & Flom LLP
                               One Rodney Square
                               Wilmington, Delaware 19801
                               Telecopy: (302) 651-3001
                               Attention: Patricia Moran Chuff, Esq.

                        (ii)   if to the General Atlantic Stockholders

                               c/o General Atlantic Service Corporation:
                               3 Pickwick Plaza
                               Greenwich, Connecticut 06830
                               Telecopy: (203) 622-8818
                               Attention: Mr. William E. Ford
                                          David A. Rosenstein, Esq.

                               with a copy to:
                               Paul, Weiss, Rifkind, Wharton & Garrison
                               1285 Avenue of the Americas
                               New York, New York 10019-6064
                               Telecopy: (212) 757-3990
                               Attention: Matthew Nimetz, Esq.

                        (iii)  if to any other Designated Holder, at its address
                               as it appears on the record books of the Company.

            All such notices and communications shall be deemed to have been
duly given when delivered by hand, if personally delivered; when delivered by
courier or overnight mail, if delivered by commercial courier service or
overnight mail; five (5) Business Days after being deposited in the mail,
postage prepaid, if mailed; and when receipt is mechanically acknowledged, if
properly telecopied.

                  (f) Successors and Assigns; Third-Party Beneficiaries. This
Agreement shall inure to the benefit of and be binding upon the heirs, legatees,
legal

<PAGE>



representatives, successors and permitted assigns of each of the parties hereto
as hereinafter provided. The Demand Registration Rights and/or the S-3
Registration Rights of the General Atlantic Stockholders, the Major Stockholders
and any Demand Stockholders in Sections 3 and 5 hereof, respectively, and the
other rights of each of the General Atlantic Stockholders, the Major
Stockholders, any Demand Stockholders and any Piggy-Back Stockholders with
respect thereto shall be, with respect to any Registrable Security, (i)
automatically transferred upon a transfer of Registrable Securities in
accordance with the Stockholders Agreement, in the case of such rights of the
General Atlantic Stockholders, among the General Atlantic Stockholders, in the
case of such rights of the Major Stockholders, among the Major Stockholders, in
the case of any Demand Stockholders, among any stockholders collectively
included in the definition of said Demand Stockholder, and, in the case of any
Piggy-Back Stockholders, among any stockholders collectively included in the
definition of said Piggy-Back Stockholder and (ii) in all other cases,
transferred only with the consent of the Company. The incidental or "piggy-back"
registration rights of the Designated Holders contained in Sections 3(b) and 4
hereof and the other rights of each of the Designated Holders with respect
thereto shall be, with respect to any Registrable Security, automatically
transferred upon a transfer of Registrable Securities in accordance with the
Stockholders Agreement by such Designated Holder to any Person who is the
transferee of such Registrable Security. All of the obligations of the Company
hereunder shall survive any such transfer. No Person other than the parties
hereto and their heirs, legatees, legal representatives, successors and
permitted assigns is intended to be a beneficiary of any of the rights granted
hereunder.

                  (g) Counterparts. This Agreement may be executed in any number
of counterparts and by the parties hereto in separate counterparts, each of
which when so executed shall be deemed to be an original and all of which taken
together shall constitute one and the same agreement.

                  (h) Headings. The headings in this Agreement are for
convenience of reference only and shall not limit or otherwise affect the
meaning hereof.

                  (i) Governing Law. This Agreement shall be governed by and
construed in accordance with the laws of the State of New York, without regard
to the principles of conflicts of law of any jurisdiction.

                  (j) Severability. If any one or more of the provisions
contained herein, or the application thereof in any circumstance, is held
invalid, illegal or unenforceable in any respect for any reason, the validity,
legality and enforceability of any such provision in every other respect and of
the remaining provisions hereof shall not be in any way impaired, it being
intended that all of the rights and privileges of the Designated Holders shall
be enforceable to the fullest extent permitted by law.

<PAGE>



                  (k) Entire Agreement. This Agreement is intended by the
parties as a final expression of their agreement and intended to be a complete
and exclusive statement of the agreement and understanding of the parties hereto
in respect of the subject matter contained herein. There are no restrictions,
promises, warranties or undertakings, other than those set forth or referred to
herein and in the GAP Stock Purchase Agreement, the Stockholders Agreement and
any stock purchase agreement between the Company and a Demand Stockholder or a
Piggy-Back Stockholder. This Agreement supersedes all prior agreements and
understandings between the parties with respect to such subject matter,
including, without limitation, the Original Registration Rights Agreement.

                  (l) Further Assurances. Each of the parties shall execute such
documents and perform such further acts as may be reasonably required or
necessary to carry out or to perform the provisions of this Agreement.

                  (m) Other Agreements. Nothing contained in this Agreement
shall be deemed to be a waiver of, or release from, any obligations any party
hereto may have under, or any restrictions on the transfer of Registrable
Securities or other securities of the Company imposed by, any other agreement
including, but not limited to, the Stock Purchase Agreement, the Stockholders
Agreement, the Certificate of Designations for the Series A Preferred Stock,
Series B Preferred Stock or any other series of preferred stock issued to a
Demand Stockholder or a Piggy-Back Stockholder and any stock purchase agreement
between the Company and a Demand Stockholder or a Piggy-Back Stockholder.

<PAGE>

            IN WITNESS WHEREOF, the undersigned have executed, or have caused to
be executed, this AMENDED AND RESTATED REGISTRATION RIGHTS AGREEMENT on the date
first written above.


                                        PRICELINE.COM INCORPORATED


                                        By:
                                           -------------------------------------
                                            Name:
                                            Title:


                                        GENERAL ATLANTIC PARTNERS 48, L.P.


                                        By: GENERAL ATLANTIC PARTNERS, LLC,
                                             its General Partner


                                        By:
                                           -------------------------------------
                                            Name:
                                            Title: A Managing Member


                                        GAP COINVESTMENT PARTNERS, L.P.


                                        By:
                                           -------------------------------------
                                            Name:
                                            Title:
<PAGE>

            IN WITNESS WHEREOF, the undersigned have executed, or have caused to
be executed, this AMENDED AND RESTATED REGISTRATION RIGHTS AGREEMENT on the date
first written above.


                                        GENERAL ATLANTIC PARTNERS 50, L.P.

                                        By: GENERAL ATLANTIC PARTNERS, LLC,
                                             its General Partner


                                        By:
                                           -------------------------------------
                                            Name:
                                            Title: A Managing Member


                                        WALKER DIGITAL CORPORATION


                                        By:
                                           -------------------------------------
                                            Name:
                                            Title:


                                        THE JAY WALKER IRREVOCABLE CREDIT TRUST


                                        By:
                                           -------------------------------------
                                            Name:
                                            Title:
<PAGE>

                                                                       Exhibit A
                                                                       ---------

                          ACKNOWLEDGMENT AND AGREEMENT
            TO THE AMENDED AND RESTATED REGISTRATION RIGHTS AGREEMENT

            WHEREAS, pursuant to a [     ], the undersigned [wishes] [wish] to
receive from priceline.com Incorporated, a Delaware corporation (the "Company"),
_______ shares, par value $0.01 per share, of [Common Stock] [Preferred Stock],
or certain newly issued options, warrants or other rights to purchase _______
shares of Common Stock (the "Shares"), of the Company; and

            WHEREAS, the undersigned [wishes] [wish] to receive certain
registration rights with respect to such Shares; and

            WHEREAS, the undersigned [has] [have] reviewed a copy of that
certain Amended and Restated Registration Rights Agreement, dated as of December
8, 1998 (the "Agreement"), among the Company, General Atlantic Partners 48,
L.P., GAP Coinvestment Partners, L.P., General Atlantic Partners 50, L.P. and
the stockholders named therein and [has] [have] been given a copy of the
Agreement and afforded ample opportunity to read and to have counsel review it,
and the undersigned [is] [are] thoroughly familiar with its terms.

            NOW, THEREFORE, in consideration of the mutual premises contained
herein and in the Agreement and for other good and valuable consideration, the
receipt and sufficiency of which is hereby acknowledged, and to induce the
Company to issue such Shares and to grant such registration rights, the
undersigned [does] [collectively do] hereby acknowledge and agree that (i) the
undersigned [has] [have] been given a copy of the Agreement and afforded ample
opportunity to read and to have counsel review it, and the undersigned is
thoroughly familiar with its terms, (ii) the Shares are subject to terms and
conditions set forth in the Agreement, (iii) the undersigned [does]
[collectively do] hereby agree fully to be bound by the Agreement collectively
as a group as a "Demand Stockholder" (as therein defined), and upon the
execution and delivery of this Acknowledgment and Agreement by the Company, the
undersigned shall have [collectively as a group] all of the rights and
obligations under the Agreement as a Demand Stockholder and (iv) the undersigned
[does] [collectively do] hereby name ____________________ to serve as [its]
[their] representative under the Agreement.

            This _____ day of ____________, 19__.


                                            PRICELINE.COM INCORPORATED


                                        By:
                                           -------------------------------------
                                            Name:
                                            Title:


                                           -------------------------------------
<PAGE>

                                                                       Exhibit B
                                                                       ---------

                          ACKNOWLEDGMENT AND AGREEMENT
            TO THE AMENDED AND RESTATED REGISTRATION RIGHTS AGREEMENT

            WHEREAS, pursuant to a [      ], the undersigned [wishes] [wish] to
receive from priceline.com Incorporated, a Delaware corporation (the "Company"),
_______ shares, par value $0.01 per share, of [Common Stock] [Preferred Stock],
or certain newly issued options, warrants or other rights to purchase _______
shares of Common Stock (the "Shares"), of the Company; and

            WHEREAS, the undersigned [wishes] [wish] to receive certain
registration rights with respect to such Shares; and

            WHEREAS, the undersigned [has] [have] reviewed a copy of that
certain Amended and Restated Registration Rights Agreement, dated as of December
8, 1998 (the "Agreement"), among the Company, General Atlantic Partners 48,
L.P., GAP Coinvestment Partners, L.P., General Atlantic Partners 50, L.P. and
the stockholders named therein and [has] [have] been given a copy of the
Agreement and afforded ample opportunity to read and to have counsel review it,
and the undersigned [is] [are] thoroughly familiar with its terms.

            NOW, THEREFORE, in consideration of the mutual premises contained
herein and in the Agreement and for other good and valuable consideration, the
receipt and sufficiency of which is hereby acknowledged, and to induce the
Company to issue such Shares and to grant such registration rights, the
undersigned [does] [collectively do] hereby acknowledge and agree that (i) the
undersigned [has] [have] been given a copy of the Agreement and afforded ample
opportunity to read and to have counsel review it, and the undersigned is
thoroughly familiar with its terms, (ii) the Shares are subject to terms and
conditions set forth in the Agreement, (iii) the undersigned [does]
[collectively do] hereby agree fully to be bound by the Agreement as a
Piggy-Back Stockholder (as therein defined), and upon the execution and delivery
of this Acknowledgment and Agreement by the Company, the undersigned shall have
[collectively as a group] all of the rights and obligations under the Agreement
as a Piggy-Back Stockholder, and (iv) the undersigned [does] [collectively do]
hereby name ____________________ to serve as [its] [their] representative under
the Agreement.

            This _____ day of ____________, 19__.


                                            PRICELINE.COM INCORPORATED


                                        By:
                                           -------------------------------------
                                            Name:
                                            Title:


                                           -------------------------------------




<PAGE>
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
                                                                    Exhibit 10.2

                                                                  Execution Copy




                            STOCK PURCHASE AGREEMENT


                                  by and among


                           PRICELINE.COM INCORPORATED,


                       GENERAL ATLANTIC PARTNERS 48, L.P.

                                       and

                         GAP COINVESTMENT PARTNERS, L.P.

                         ------------------------------

                              Dated: July 31, 1998

                         ------------------------------



- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------

<PAGE>







                                TABLE OF CONTENTS
<TABLE>
<CAPTION>

                                                                                                      Page
                                                                                                      ----
<S>                                                                                                 <C>

ARTICLE 1DEFINITIONS.....................................................................................1
         1.1      Definitions............................................................................1
         1.2      Accounting Terms; Financial Statements.................................................9
         1.3      Knowledge of the Company...............................................................9

ARTICLE 2PURCHASE AND SALE OF PREFERRED STOCK...........................................................10
         2.1      Purchase and Sale of Preferred Stock to the Purchasers................................10
         2.2      Certificate of Designation............................................................10
         2.3      Closing...............................................................................10
         2.4      Purchase Price Adjustment.............................................................10

ARTICLE 3REPRESENTATIONS AND WARRANTIES OF THE COMPANY..................................................12
         3.1      Corporate Existence and Power.........................................................12
         3.2      Authorization; No Contravention.......................................................12
         3.3      Governmental Authorization; Third Party Consents......................................12
         3.4      Binding Effect........................................................................13
         3.5      Litigation............................................................................13
         3.6      Compliance with Laws..................................................................13
         3.7      Capitalization........................................................................14
         3.8      No Default or Breach; Contractual Obligations.........................................15
         3.9      Title to Properties...................................................................15
         3.10     FIRPTA................................................................................15
         3.11     Financial Statements..................................................................15
         3.12     Taxes.................................................................................16
         3.13     No Material Adverse Change; Ordinary Course of Business...............................16
         3.14     Investment Company....................................................................16
         3.15     Private Offering......................................................................17
         3.16     Labor Relations.......................................................................17
         3.17     Employee Benefit Plans................................................................17
         3.18     Title to Assets.......................................................................17
         3.19     Liabilities...........................................................................18
         3.20     Intellectual Property.................................................................18
         3.21     Year 2000 Compliance..................................................................20
         3.22     Network Redundancy and Computer Back-Up...............................................20
         3.23     Privacy of Customer Information.......................................................20
         3.24     Potential Conflicts of Interest.......................................................20
         3.25     Trade Relations.......................................................................21
         3.26     Outstanding Borrowing.................................................................21
</TABLE>
                                        i
<PAGE>
<TABLE>


<S>                                                                                                 <C>

         3.27     Insurance.............................................................................21
         3.28     Environmental Matters.................................................................21
         3.29     Broker's, Finder's or Similar Fees....................................................22
         3.30     WAMP Assets...........................................................................22
         3.31     Breitenbach Agreement.................................................................22
         3.32     Affiliate Payments....................................................................22
         3.33     Employees.............................................................................22
         3.34     Financial Projections.................................................................22
         3.35     Disclosure............................................................................22

ARTICLE 4REPRESENTATIONS AND WARRANTIES OF THE PURCHASERS...............................................23
         4.1      Existence and Power...................................................................23
         4.2      Authorization; No Contravention.......................................................23
         4.3      Governmental Authorization; Third Party Consents......................................23
         4.4      Binding Effect........................................................................23
         4.5      Purchase for Own Account..............................................................24
         4.6      Restricted Securities.................................................................25
         4.7      Broker's, Finder's or Similar Fees....................................................25
         4.8      Accredited Investor...................................................................25
         4.9      Litigation............................................................................25

ARTICLE 5CONDITIONS TO THE OBLIGATION OF THE PURCHASERS TO CLOSE........................................25
         5.1      Representations and Warranties........................................................26
         5.2      Compliance with this Agreement........................................................26
         5.3      Secretary's Certificate...............................................................26
         5.4      Officer's Certificate.................................................................26
         5.5      Filing of Certificate of Designation..................................................26
         5.6      Stockholders Agreement................................................................26
         5.7      Registration Rights Agreement.........................................................26
         5.8      Opinion of Counsel....................................................................27
         5.9      Purchased Shares......................................................................27
         5.10     Consents and Approvals................................................................27
         5.11     No Material Judgment or Order.........................................................27
         5.12     No Litigation.........................................................................27
         5.13     Incorporation of the Company..........................................................27
         5.14     Chief Executive Officer...............................................................28
         5.15     Side Agreement........................................................................28

ARTICLE 6CONDITIONS TO THE OBLIGATION OF THE COMPANY TO CLOSE...........................................28
         6.1      Representation and Warranties.........................................................29
         6.2      Compliance with this Agreement........................................................29
         6.3      General Partners' Certificates........................................................29
         6.4      Stockholders Agreement................................................................29
         6.5      Registration Rights Agreement.........................................................29
</TABLE>
                                        ii
<PAGE>

<TABLE>
<CAPTION>

<S>                                                                                                 <C>

         6.6      Opinion of Purchasers' Counsel........................................................29
         6.7      No Material Judgment or Order.........................................................29
         6.8      Payment of Purchase Price.............................................................30
         6.9      Qualifications........................................................................30

ARTICLE 7INDEMNIFICATION................................................................................30
         7.1      Indemnification.......................................................................30
         7.2      Indemnification by Purchasers.........................................................31
         7.3      Seller's Limitation of Liability......................................................31
         7.4      Notification..........................................................................31
         7.5      Exclusivity of Remedies...............................................................32

ARTICLE 8AFFIRMATIVE COVENANTS..........................................................................33
         8.1      Preservation of Existence.............................................................33
         8.2      PriceLine Travel Reorganization.......................................................33
         8.3      Financial Statements and Other Information............................................33
         8.4      Annual Budget.........................................................................34
         8.5      Reservation of Common Stock...........................................................34
         8.6      Insurance.............................................................................34
         8.7      Books and Records.....................................................................35
         8.8      Back-Ups of Computer Software.........................................................35
         8.9      Personnel and Assets..................................................................35
         8.10     Breitenbach Agreement.................................................................35
         8.11     Stock Option Plan.....................................................................35

ARTICLE 9MISCELLANEOUS..................................................................................35
         9.1      Survival of Representations and Warranties............................................35
         9.2      Notices...............................................................................36
         9.3      Successors and Assigns; Third Party Beneficiaries.....................................37
         9.4      Amendment and Waiver..................................................................37
         9.5      Counterparts..........................................................................37
         9.6      Headings..............................................................................38
         9.7      GOVERNING LAW.........................................................................38
         9.8      Severability..........................................................................38
         9.9      Entire Agreement......................................................................38
         9.10     Fees..................................................................................38
         9.11     Publicity.............................................................................38
         9.12     Further Assurances....................................................................39
</TABLE>

                                       iii

<PAGE>






                                                                        Page



                                        iv



<PAGE>


                                                                       Page



                                        v





<PAGE>







EXHIBITS

A-1      Certificate of Incorporation
A-2      By-laws
B        Form of Certificate of Designations
C        Form of Stockholders Agreement
D        Form of Registration Rights Agreement
E        Form of Opinion of Counsel to the Company
F        Form of Opinion of Counsel to the Purchasers
G        Braddock Term Sheet


SCHEDULES

2.1      Purchased Shares and Purchase Price
3.3      Governmental Authorizations; Third Party Consents
3.5      Litigation
3.7(a)   List of Stockholders and Capital Stock and Stock Equivalents.
3.8      Defaults or Breaches of Contractual Obligations; Contractual
         Obligations
3.13     Dividends and Distributions
3.17     Employee Benefit Plans
3.18     Title to Assets of the Company
3.20(a)(ii) Intellectual Property Owned by the Company or the Subsidiary and
         Applications therefor
3.20(a)(iii) Intellectual Property Licenses under which the Company or the
         Subsidiary is a Licensor or Licensee
3.20(a)(iv) Infringements of the Company or the Subsidiary
3.20(a)(v) Intellectual Property Litigation
3.20(b)  Infringement or Violations of Intellectual Property Rights
3.20(d)  License Agreements which require a Material Royalty Payment
3.22     Network Redundancy and Computer Back-up
3.24     Potential Conflicts of Interests
3.26     Outstanding Borrowing
3.27     Insurance

                                       vi
<PAGE>





                            STOCK PURCHASE AGREEMENT

                  STOCK PURCHASE AGREEMENT, dated July 31, 1998 (the
"Agreement"), among priceline.com Incorporated, a Delaware corporation (the
"Company"), General Atlantic Partners 48, L.P., a Delaware limited partnership
("GAP LP"), and GAP Coinvestment Partners, L.P., a New York limited partnership
("GAP Coinvestment" and, together with GAP LP, the "Purchasers").

                  WHEREAS, upon the terms and conditions set forth in this
Agreement, the Company proposes to issue and sell to (a) GAP LP, for an
aggregate purchase price of $17,600,000 (subject to adjustment as more
specifically provided herein), an aggregate of 15,214,042 shares of Series A
Convertible Preferred Stock, par value $0.01 per share, of the Company (the
"Preferred Stock") and (b) GAP Coinvestment, for an aggregate purchase price of
$2,400,000 (subject to adjustment as more specifically provided herein), an
aggregate of 2,074,642 shares of Preferred Stock;

                  WHEREAS, each share of Preferred Stock is convertible (subject
to adjustment) into one share of Common Stock; and

                  WHEREAS, the transactions contemplated by this Agreement and
the Agreement of Merger, dated July 31, 1998, between priceline.com LLC and the
Company constitute part of a single integrated transaction and are pursuant to a
single integrated plan intended to qualify as a tax-free transaction under
Section 351 of the Internal Revenue Code of 1986, as amended.

                  NOW, THEREFORE, in consideration of the mutual covenants and
agree ments set forth herein and for good and valuable consideration, the
receipt and adequacy of which is hereby acknowledged, the parties hereto agree
as follows:


                                    ARTICLE 1

                                   DEFINITIONS

                  1.1 Definitions. As used in this Agreement, and unless the
context requires a different meaning, the following terms have the meanings
indicated:

                  "Adjusted Price Per Share" has the meaning set forth in
Section 2.4 of this Agreement.

                  "Affiliate" shall mean any Person who is an "affiliate" as
defined in Rule 12b-2 of the General Rules and Regulations under the Exchange
Act. The following shall be deemed to be Affiliates of GAP LP: (a) GAP LLC, the
members of GAP LLC 


<PAGE>

and the limited partners of GAP LP; (b) any Affiliate of the limited partners of
GAP LP; and (c) any limited liability company or partnership a majority of whose
members or partners, as the case may be, are members of GAP LLC. GAP LP and GAP
Coinvestment shall be deemed to be Affiliates of one another.

                  "Agreement" means this Agreement as the same may be amended,
supplemented or modified in accordance with the terms hereof.

                  "Assets" has the meaning set forth in Section 3.18 of this
Agreement.

                  "Balance Sheets" has the meaning set forth in Section 3.11
hereto.

                  "Board of Directors" means the Board of Directors of the
Company.

                  "Breitenbach Agreement" means the Employment Agreement dated
January 1, 1998 among Paul Breitenbach, Jay Walker, WDC and the Company.

                  "Business Day" means any day other than a Saturday, Sunday or
other day on which commercial banks in the State of New York are authorized or
required by law or executive order to close.

                  "By-laws" means the by-laws of the Company in effect on the
Closing Date substantially in the form attached hereto as Exhibit A-2, as the
same may be amended from time to time.

                  "Capital Lease Obligations" of any Person shall mean, as of
the date of determination, the obligations of such Person to pay rent or other
amounts under any lease (or other arrangement conveying the right to use) of
real or personal property, or a combination thereof, which obligations are
required to be classified and accounted for as capital leases on a balance sheet
of such Person under GAAP and, for the purposes of this Agreement, the amount of
such obligations at any time shall be the capitalized amount thereof at such
time determined in accordance with GAAP consistently applied.

                  "Certificate of Designations" means the Certificate of
Designations with respect to the Preferred Stock adopted by the Board of
Directors and filed with the Secretary of State of the State of Delaware on or
before the Closing Date substantially in the form attached hereto as Exhibit B.

                  "Certificate of Incorporation" means the Certificate of
Incorporation of the Company substantially in the form attached hereto as
Exhibit A-1, as the same may be amended from time to time.

                                       2
<PAGE>

                  "Chief Executive Officer" has the meaning set forth in Section
5.15 of this Agreement.

                  "Claims" has the meaning set forth in Section 3.5 of this
Agreement.

                  "Closing" has the meaning set forth in Section 2.3 of this
Agreement.

                  "Closing Date" has the meaning set forth in Section 2.3 of
this Agreement.

                  "Code" means the Internal Revenue Code of 1986, as amended, or
any successor statute thereto.

                  "Commission" means the Securities and Exchange Commission or
any similar agency then having jurisdiction to enforce the Securities Act.

                  "Common Stock" means the common stock, par value $0.01 per
share, of the Company.

                  "Company" has the meaning set forth in the recitals to this
Agreement.

                  "Condition of the Company" means the assets, business,
properties, operations or financial condition of the Company.

                  "Contingent Obligation" means, as applied to any Person, any
direct or indirect liability of that Person with respect to any Indebtedness,
lease, dividend, guaranty, letter of credit or other obligation, contractual or
otherwise (the "primary obligation") of another Person (the "primary obligor"),
whether or not contingent, (a) to purchase, repurchase or otherwise acquire such
primary obligations or any property constituting direct or indirect security
therefor, or (b) to advance or provide funds (i) for the payment or discharge of
any such primary obligation, or (ii) to maintain working capital or equity
capital of the primary obligor or otherwise to maintain the net worth or
solvency or any balance sheet item, level of income or financial condition of
the primary obligor, or (c) to purchase property, securities or services
primarily for the purpose of assuring the owner of any such primary obligation
of the ability of the primary obligor to make payment of such primary
obligation, or (d) otherwise to assure or hold harmless the owner of any such
primary obligation against loss or failure or inability to perform in respect
thereof. The amount of any Contingent Obligation shall be deemed to be an amount
equal to the stated or determinable amount of the primary obligation in respect
of which such Contingent Obligation is made or, if not stated or determinable,
the maximum reasonably anticipated liability in respect thereof.

                                       3
<PAGE>

                  "Contractual Obligations" means as to any Person, any
provision of any security issued by such Person or of any agreement,
undertaking, contract, indenture, mortgage, deed of trust or other instrument to
which such Person is a party or by which it or any of its property is bound.

                  "Copyrights" means any foreign or United States copyright
registrations and applications for registration thereof, and any non-registered
copyrights.

                  "Defined Benefit Plan" means a defined benefit plan within the
meaning of Section 3(35) of ERISA or Section 414(j) of the Code, whether funded
or unfunded, qualified or nonqualified (whether or not subject to ERISA or the
Code).

                  "Election Notice" has the meaning set forth in Section 2.4 of
this Agreement.

                  "Environmental Laws" means federal, state, local and foreign
laws, principles of common law, civil law, regulations and codes, as well as
orders, decrees, judgments or injunctions issued, promulgated, approved or
entered thereunder relating to pollution, protection of the environment.

                  "ERISA" means the Employee Retirement Income Security Act of
1974, as amended.

                  "ERISA Affiliate" means any Person that is treated as a single
employer with the Company under Section 414(b), (c), (m) or (o) of the Code.

                  "Excess Option Shares" has the meaning set forth in Section
2.4 of this Agreement.

                  "Exchange Act" means the Securities Exchange Act of 1934, as
amended, and the rules and regulations of the Commission thereunder.

                  "Excluded Issuances" means (a) the conditional future grant to
Richard S. Braddock, as described in the term sheet dated July 17, 1998 attached
hereto as Exhibit G, of a warrant to purchase three million shares of Common
Stock, vesting upon the earlier to occur of (i) the Company achieving a public
market capitalization of $750 million, and (ii) the Company earning pre-tax
operating income of $70 million for a twelve month period occurring over four
consecutive fiscal quarters, and (b) any performance-based warrants to purchase
shares of Common Stock.

                  "Financial Statements" has the meaning set forth in Section
3.11 of this Agreement.

                                       4
<PAGE>

                  "GAAP" means generally accepted accounting principles in
effect from time to time in the United States.

                  "GAP Coinvestment" has the meaning set forth in the recitals
to this Agreement.

                  "GAP LLC" means General Atlantic Partners, LLC, a Delaware
limited liability company and the general partner of GAP LP, and any successor
to such entity.

                  "GAP LP" has the meaning set forth in the recitals to this
Agreement.

                  "Grant Notice" has the meaning set forth in Section 2.4
hereto.

                  "Governmental Authority" means the government of any nation,
state, city, locality or other political subdivision thereof, any entity
exercising executive, legislative, judicial, regulatory or administrative
functions of or pertaining to government, and any corporation or other entity
owned or controlled, through stock or capital ownership or otherwise, by any of
the foregoing.

                  "Indebtedness" means, as to any Person, (a) all obligations of
such Person for borrowed money (including, without limitation, reimbursement and
all other obligations with respect to surety bonds, letters of credit and
bankers' acceptances, whether or not matured), (b) all obligations of such
Person evidenced by notes, bonds, debentures or similar instruments, (c) all
obligations of such Person to pay the deferred purchase price of property or
services, except trade accounts payable and accrued commercial or trade
liabilities arising in the ordinary course of business, (d) all interest rate
and currency swaps, caps, collars and similar agreements or hedging devices
under which payments are obligated to be made by such Person, whether
periodically or upon the happening of a contingency, (e) all indebtedness
created or arising under any conditional sale or other title retention agreement
with respect to property acquired by such Person (even though the rights and
remedies of the seller or lender under such agreement in the event of default
are limited to repossession or sale of such property), (f) all obligations of
such Person under leases which have been or should be, in accordance with GAAP,
recorded as capital leases, (g) all indebtedness secured by any Lien (other than
Liens in favor of lessors under leases other than leases included in clause (f))
on any property or asset owned or held by that Person regardless of whether the
indebtedness secured thereby shall have been assumed by that Person or is
non-recourse to the credit of that Person, and (h) any Contingent Obligation of
such Person.

                  "Indemnified Party" has the respective meanings set forth in
Sections 7.1 and 7.3 of this Agreement.

                                       5
<PAGE>

                  "Indemnifying Party" has the respective meanings set forth in
Sections 7.1 and 7.3 of this Agreement.

                  "Initial Public Offering" means the initial public offering of
the shares of Common Stock of the Company pursuant to an effective Registration
Statement filed under the Securities Act.

                  "Intellectual Property" has the meaning set forth in Section
3.20 of this Agreement.

                  "International Carriers" means Scandinavian Airlines System,
Denmark-Norway-Sweden, a Scandinavian consortium, Aer Lingus, Virgin Atlantic
Airways, Ltd., Iberia Airlines, Malaysia Airlines and Icelandair.

                  "Internet Assets" means any internet domain names and other
computer user identifiers and any rights in and to sites on the worldwide web,
including rights in and to any text, graphics, audio and video files and html or
other code incorporated in such sites.

                  "Liabilities" has the meaning set forth in Section 3.19 of
this Agreement.

                  "Lien" means any mortgage, deed of trust, pledge,
hypothecation, assignment, encumbrance, lien (statutory or other) or preference,
priority, right or other security interest or preferential arrangement of any
kind or nature whatsoever (excluding preferred stock and equity related
preferences), including, without limitation, those created by, arising under or
evidenced by any conditional sale or other title retention agreement, the
interest of a lessor under a Capital Lease Obligation, or any financing lease
having substantially the same economic effect as any of the foregoing.

                  "OEM" has the meaning set forth in Section 3.5 hereto.

                  "Orders" has the meaning set forth in Section 3.2 of this
Agreement.

                  "Omnibus Plan" has the meaning set forth in Section 8.11
hereto.

                  "Option Ceiling" has the meaning set forth in Section 2.4 of
this Agreement.

                  "Patents" means any foreign or United States patents and
patent applications, including any divisions, continuations,
continuations-in-part, substitutions or reissues thereof, whether or not patents
are issued on such applications and whether or not such applications are
modified, withdrawn or resubmitted.

                                       6
<PAGE>

                  "Permitted Liens" means (i) mechanics', carriers', workmen's,
repairmen's or other like Liens arising or incurred in the ordinary course of
business with respect to liabilities that are not yet due or delinquent, (ii)
Liens for Taxes, assessments and other governmental charges which are not due
and payable or which may hereafter be paid without penalty or which are being
contested in good faith by appropriate proceedings and (iii) other imperfections
of title or encumbrances, if any, which imperfections of title or other
encumbrances, individually or in the aggregate, would not be reasonably expected
to impair the ability of the Company to use the property or asset to which it
relates in substantially the same manner as it was used on the Closing Date.

                  "Permits" has the meaning set forth in Section 3.6(b)(i) of
this Agreement.

                  "Person" means any individual, firm, corporation, partnership,
trust, incorporated or unincorporated association, joint venture, joint stock
company, limited liability company, Governmental Authority or other entity of
any kind, and shall include any successor (by merger or otherwise) of such
entity.

                  "PISA" has the meaning set forth in Section 3.31 hereto.

                  "Plans" has the meaning set forth in Section 3.17 of this
Agreement.

                  "Preferred Stock" has the meaning set forth in the recitals to
this Agreement.

                  "Priceline LLC" means priceline.com LLC, a Delaware limited
liability company.

                  "PriceLine Travel" means PriceLine Travel, Inc., a [Delaware]
corporation.

                  "Purchased Shares" has the meaning set forth in Section 2.1 of
this Agreement.

                  "Purchaser Indemnified Party" has the meaning set forth in
Section 7.2 hereto.

                  "Purchaser Indemnifying Party" has the meaning set forth in
Section 7.2 hereto.

                  "Purchasers" has the meaning set forth in the recitals to this
Agreement.

                                       7
<PAGE>

                  "Registration Rights Agreement" means the Registration Rights
Agreement substantially in the form attached hereto as Exhibit D.

                  "Registration Statement" means a registration statement filed
pursuant to the Securities Act.

                  "Regulations" means the Treasury Regulations promulgated under
the Code.

                  "Reimbursement Amount" has the meaning set forth in Section
2.4 of this Agreement.

                  "Requirements of Law" means, as to any Person, any law,
statute, treaty, rule, regulation, right, privilege, qualification, license or
franchise or determination of an arbitrator or a court or other Governmental
Authority or stock exchange, in each case applicable or binding upon such Person
or any of its property or to which such Person or any of its property is subject
or pertaining to any or all of the transactions contemplated or referred to
herein.

                  "Securities Act" means the Securities Act of 1933, as amended,
and the rules and regulations of the Commission thereunder.

                  "Side Agreement" has the meaning set forth in Section 5.15
hereto.

                  "Side Parties" has the meaning set forth in Section 5.15
hereto.

                  "Software" means any computer software program, source code,
object code, data and documentation, including, without limitation, any computer
software programs that incorporate and run the Company's pricing models,
formulae and algorithms.

                  "Statements of Operations and Capital" has the meaning set
forth in Section 3.11 hereto.

                  "Stock Equivalents" means any security or obligation which is
by its terms convertible into or exchangeable for shares of common stock or
other capital stock or securities of the Company, and any option, warrant or
other subscription or purchase right with respect to common stock or such other
capital stock or securities.

                  "Stockholders" means Jay Walker and certain other stockholders
of the Company.


                                     8

<PAGE>

                  "Stockholders Agreement" means the Stockholders Agreement
substantially in the form attached hereto as Exhibit C.

                  "Subsidiary Date" has the meaning set forth in Section 5.15
hereto.

                  "Taxes" has the meaning set forth in Section 3.12 of this
Agreement.

                  "Trade Secrets" means any trade secrets, research records,
processes, procedures, manufacturing formulae, technical know-how, technology,
blue prints, designs, plans, inventions (whether patentable and whether reduced
to practice), invention disclosures and improvements thereto.

                  "Trademarks" means any foreign or United States trademarks,
service marks, trade dress, trade names, brand names, designs and logos,
corporate names, product or service identifiers, whether registered or
unregistered, and all registrations and applications for registration thereof.

                  "Transaction Documents" means collectively, this Agreement,
the Stockholders Agreement, the Registration Rights Agreement and the Side
Agreement.

                  "WAMP" means Walker Asset Management Limited Partnership, a
Connecticut limited partnership.

                  "WDC" means Walker Digital Corporation, a Delaware
corporation.

                  1.2 Accounting Terms; Financial Statements. All accounting
terms used herein not expressly defined in this Agreement shall have the
respective meanings given to them in accordance with sound accounting practice.
The term "sound accounting practice" shall mean such accounting practice as, in
the opinion of the independent certified public accountants regularly retained
by the Company, conforms at the time to GAAP applied on a consistent basis
except for changes with which such accountants concur.

                  1.3 Knowledge of the Company. All references to the knowledge
of the Company shall mean knowledge of Jay Walker, Chairman of the Company,
Jesse Fink, Chief Operating Officer of the Company, Paul E. Francis, Chief
Financial Officer of the Company, Timothy Brier and any other officer who was
present at the due diligence meeting with General Atlantic personnel held on
Thursday, July 23, 1998.


                                       9
<PAGE>


                                    ARTICLE 2

                      PURCHASE AND SALE OF PREFERRED STOCK

                  2.1 Purchase and Sale of Preferred Stock to the Purchasers.
Subject to the terms and conditions herein set forth, the Company agrees to
issue and sell to each of the Purchasers, and each of the Purchasers agrees that
it will purchase from the Company, on the Closing Date, the aggregate number of
shares of Preferred Stock set forth opposite such Purchaser's name on Schedule
2.1 hereto, for the aggregate purchase price set forth opposite such Purchaser's
name on Schedule 2.1 hereto (all of the shares of Preferred Stock being
purchased by the Purchasers listed on Schedule 2.1 being referred to herein as
the "Purchased Shares"), subject to the terms of Section 2.4 below. Immediately
after the Closing, the Purchased Shares shall represent not less than 16.39% of
the total number of shares of Common Stock outstanding on a fully diluted basis
(including, without limitation, the grant and exercise of all options subject to
the Company's stock option plans and assuming the conversion of all the
Purchased Shares).

                  2.2 Certificate of Designation. The Purchased Shares shall
have the preferences and rights set forth in the Certificate of Designations.


                  2.3 Closing. The closing of the sale and purchase of the
Purchased Shares (the "Closing") shall take place at the offices of Paul, Weiss,
Rifkind, Wharton & Garrison, no later than 4:00 p.m., New York time, on the date
hereof, or at such other time, place and date that the Company and the
Purchasers may agree in writing (the "Closing Date"). At the Closing, the
Company shall deliver to each Purchaser a certificate representing the Purchased
Shares being purchased by such Purchaser against delivery by such Purchaser to
the Company of the aggregate purchase price therefor by wire transfer of
immediately available funds.

                  2.4 Purchase Price Adjustment. The aggregate purchase price
set forth on Schedule 2.1 hereto shall be subject to adjustment pursuant to this
Section 2.4. The Company has represented in Section 3.7(a) hereof that, as of
the date hereof, options or warrants to purchase a total of 14,100,000 shares of
Common Stock (the "Option Ceiling") have been granted by the Company, or are
reserved for grant under the Company's existing stock option plans, as described
in Schedule 3.7(a). Except for Excluded Issuances, if the Company at any time on
or after the date of execution of this Agreement, but prior to the Initial
Public Offering (a) grants to any of its employees, officers, directors or
consultants shares of Common Stock (restricted or unrestricted) or options or
warrants to purchase shares of Common Stock, including, without limitation, the
issuance to Richard S. Braddock of a warrant to purchase 2,000,000 shares of
Common Stock, vesting upon the earlier to occur of the Initial Public Offering
and the issuance by the Company of at least $50 million of equity securities at
a Company pre-money



                                       10
<PAGE>

valuation of not less than $450 million, as described in the term sheet dated
July 17, 1998 attached hereto as Exhibit G, in excess of the Option Ceiling or
(b) reserves for grant to any of its employees, officers, directors or
consultants shares of Common Stock (restricted or unrestricted) or options to
purchase shares of Common Stock in excess of the Option Ceiling by amending its
existing stock option plans or creating any new stock option plans or employee
benefit arrangements (other than such amendments, plans or arrangements that are
in contemplation of the Initial Pubic Offering; provided that nothing is granted
until after the Initial Public Offering) (in either case, such shares of Common
Stock or shares of Common Stock issuable upon the exercise of options or
warrants in excess of the Option Ceiling being referred to herein as the "Excess
Option Shares"), then the Company shall reimburse each of the Purchasers an
amount (each a "Reimbursement Amount") equal to the product of (a) the excess of
(i) $1.156826 or, if a Reimbursement Amount has previously been paid, the
Adjusted Price Per Share (calculated as part of the immediately preceding
Reimbursement Amount calculation), over (ii) a fraction (such fraction, the
"Adjusted Price Per Share") (x) the numerator of which is $100 million and (y)
the denominator of which is the sum of the number of shares of Common Stock
outstanding immediately prior to the Closing on a fully diluted basis plus the
aggregate number of Excess Option Shares, multiplied by (b) the aggregate number
of Purchased Shares set forth opposite such Purchaser's name on Schedule 2.1
hereto. Within seven (7) days of the grant, reservation or creation of any
Excess Option Shares, the Company shall send written notice thereof to each of
the Purchasers (the "Grant Notice"). The Reimbursement Amounts shall be paid
promptly, but not later than five (5) days following delivery of the Grant
Notice by the Company, in shares of Preferred Stock. In paying the Reimbursement
Amounts, the Company shall pay to each Purchaser the number of fully paid and
non-assessable shares of Preferred Stock equal to the excess of (a) a fraction
(i) the numerator of which is the aggregate purchase price set forth opposite
such Purchaser's name on Schedule 2.1 hereto and (ii) the denominator of which
is the Adjusted Price Per Share, over (b) the aggregate number of Purchased
Shares set forth opposite such Purchaser's name on Schedule 2.1 hereto. The
Company shall make reimbursements any time additional Excess Option Shares are
granted, reserved or created.


                                    ARTICLE 3

                  REPRESENTATIONS AND WARRANTIES OF THE COMPANY

                  The Company represents and warrants to the Purchasers as of
the date hereof as follows:

                  3.1 Corporate Existence and Power. The Company (a) is a
corporation duly organized, validly existing and in good standing under the laws
of the jurisdiction of



                                       11
<PAGE>

its incorporation; (b) has all requisite power and authority to own and operate
its property, to lease the property it operates as lessee and to conduct the
business in which it is currently, or is proposed to be, engaged; (c) is duly
qualified as a foreign corporation, licensed and in good standing under the laws
of each jurisdiction in which its ownership, lease or operation of property or
the conduct of its business requires such qualification, except to the extent
that the failure to do so would not have a material adverse effect on the
Condition of the Company; and (d) has the corporate power and authority to
execute, deliver and perform its obligations under this Agreement and each of
the other Transaction Documents to which it is a party. The Company has not
received notice from any jurisdiction, other than those referred to in clause
(c) above, in writing or otherwise, that the Company is required to qualify as a
foreign corporation therein, and the Company does not file any franchise, income
or other tax returns in any other jurisdiction based upon its ownership or use
of property therein or its derivation of income therefrom. The Company does not
own or lease property in any jurisdiction other than its jurisdiction of
incorporation and the jurisdictions referred to in clause (c) above.

                  3.2 Authorization; No Contravention. The execution, delivery
and performance by the Company of this Agreement and each of the other
Transaction Documents and the transactions contemplated hereby and thereby (a)
have been duly authorized by all necessary corporate or other comparable action
of the Company; (b) do not contravene the terms of the Certificate of
Incorporation or the By-laws; (c) do not violate, conflict with or result in any
breach or contravention of, or the creation of any Lien under, any material
Contractual Obligation of the Company, or any material Requirement of Law
applicable to the Company; and (d) do not violate any judgment, injunction,
writ, award, decree or order of any nature (collectively, "Orders") of any
Governmental Authority against, or binding upon, the Company.

                  3.3 Governmental Authorization; Third Party Consents. Except
as set forth in Schedule 3.3, no approval, consent, compliance, exemption,
authorization or other action by, or notice to, or filing with, any Governmental
Authority or any other Person, and no lapse of a waiting period under a
Requirement of Law, is necessary or required in connection with the execution,
delivery or performance (including, without limitation, the sale, issuance and
delivery of the Purchased Shares) by, o enforcement against, the Company of this
Agreement and the other Transaction Documents or the transactions contemplated
hereby and thereby.

                  3.4 Binding Effect. This Agreement and each of the other
Transaction Documents have been duly executed and delivered by the Company, and
constitute the valid and binding obligations of the Company enforceable against
the Company in accordance with their terms, except as enforceability may be
limited by applicable bankruptcy, insolvency, reorganization, fraudulent
conveyance or transfer, moratorium or similar laws affecting the enforcement of
creditors' rights generally and by general principles



                                       12
<PAGE>

of equity relating to enforceability (regardless of whether considered in a
proceeding at law or in equity).

                  3.5 Litigation. Except as set forth on Schedule 3.5, (a) there
are no actions, suits, proceedings, claims, complaints, disputes, arbitrations
or investigations (collectively, "Claims") pending or, to the knowledge of the
Company, threatened, at law, in equity, in arbitration or before any
Governmental Authority against the Company, and (b) the Company has not received
any notices or other communications, whether written or oral, (i) from any
automobile dealership or airline that ha been participating in the Company's
internet commerce system either (x) stating that such entity does not wish to
participate in the Company's internet commerce system, or (y) threatening the
Company with any type of Claim with respect to any Company solicitations,
inquiries or other communications, or (z) stating that such entity has been
notified by an original equipment manufacturer ("OEM") that such OEM does not
wish for such entity to participate in the Company's internet commerce system,
or (ii) fro any OEM that such OEM does not wish any of its automobile
dealerships to participate in the Company's internet commerce system. No Order
has been issued by any court or other Governmental Authority against the Company
purporting to enjoin or restrain the execution, delivery or performance of this
Agreement or any of the other Transaction Documents.

                  3.6 Compliance with Laws.

                           (a) The Company is in compliance with all
Requirements of Law including, without limitation, any general consumer
protection statutes and any state travel agent registration requirements, and
all Orders issued by any court or Governmental Authority against the Company
that are not expressly covered by any other representation or warranty of the
Company set forth in Section 3 hereof in all respects, except to the extent that
the failure to comply with such Requirements of Law or Orders would not have a
material adverse effect on the Condition of the Company.

                           (b) (i) The Company has all material licenses,
permits and approvals of any Governmental Authority (collectively, "Permits")
that are necessary for the conduct of the business of the Company; (ii) such
Permits are in full force and effect; and (iii) no violations are or have been
recorded in respect of any Permit.

                           (c) No material expenditure is presently required by
the Company to comply with any existing Requirement of Law or Order.

                  3.7 Capitalization.

                           (a) On the Closing Date, after giving effect to the
transactions contemplated by this Agreement, the authorized capital stock of the
Company shall 


                                     13

<PAGE>

consist of (i) 150,000,000 shares of Common Stock, of which
74,409,902 shares are issued and outstanding and (ii) 30,000,000 shares of
Preferred Stock, of which 17,288,684 shares are outstanding and issued to the
Purchasers. Schedule 3.7(a) sets forth, as of the Closing Date, a true and
complete list of (x) the stockholders of th Company (including any trust or
escrow agent arrangement created in connection with any employee stock option
plan) and, opposite the name of each stockholder, the amount of all outstanding
capital stock and Stock Equivalents owned by such stockholder and (y) the
holders of Stock Equivalents (other than the stockholders set forth in clause
(x) above) and, opposite the name of each such holder, the amount of all Stock
Equivalents owned by such holder. As of the date of this Agreement, options or
warrants to purchase a total of 14,100,000 shares of Common Stock have been
granted, or are reserved for grant under the Company's existing stock option
plans. The Company has reserved an aggregate of 17,288,684 shares of Common
Stock for issuance upon conversion of the Purchased Shares. Except as set forth
on Schedule 3.7(a), there are no options, warrants, conversion privileges,
subscription or purchase rights or other rights presently outstanding to
purchase or otherwise acquire (i) any authorized but unissued, unauthorized or
treasury shares of the Company's capital stock, (ii) any Stock Equivalents or
(iii) other securities of the Company. The Purchased Shares are duly authorized,
and when issued and sold to the Purchasers after payment therefor, will be
validly issued, fully paid and non-assessable, and, subject to the truth and
accuracy of each Purchaser's representations and warranties set forth in Section
4 hereof, will be issued in compliance with the registration and qualification
requirements of all applicable federal, state and foreign securities laws or
pursuant to a valid exemption therefrom. The shares of Common Stock issuable
upon conversion of the Purchased Shares are duly authorized and, when issued in
compliance with the provisions of the Certificate of Incorporation and the
Certificate of Designation, will be validly issued, fully paid and
non-assessable. The issued and outstanding shares of Common Stock are all duly
authorized, validly issued, fully paid and non-assessable, and wer issued in
compliance with the registration and qualification requirements of all
applicable federal, state and foreign securities laws or pursuant to a valid
exemption therefrom.

                           (b) The Company does not directly or indirectly own
and has not made any investment in any of the capital stock of, or any other
proprietary interest in, any Person.

                  3.8 No Default or Breach; Contractual Obligations. Except as
set forth in Schedule 3.8, the Company has not received written notice of any
default under, or is in default under, any Contractual Obligation listed on
Schedule 3.8. Schedule 3.8 (a) lists all of the Contractual Obligations to which
the Company is a party, whether written or oral, (i) which involve an amount in
excess of $25,000, (ii) which the Company has entered into with any airline or
airline reservation system or any automobile manufacturer, distributor or
dealership, or (iii) which are otherwise material to the



                                       14

<PAGE>

Condition of the Company, (b) states opposite the name of each such Contractual
Obligation the amount of inventory guaranteed or committed to the Company, if
applicable, and (c) identifies with an asterisk each such Contractual Obligation
that is oral. All such Contractual Obligations are valid, subsisting, in full
force and effect and binding upon the Company and, to the knowledge of the
Company, the other parties thereto, except as enforceability may be limited by
applicable bankruptcy, insolvency, reorganization, fraudulent conveyance or
transfer, moratorium or similar laws affecting the enforcement of creditors'
rights generally and by general principles of equity relating to enforceability,
and the Company has paid in full or accrued all amounts due thereunder and has
satisfied in full or provided for all of its liabilities and obligations
thereunder to the extent such payment, liabilities or obligations were due, or
required performance, as applicable, from or by the Company. To the knowledge of
the Company, no other party to any such Contractual Obligation is in default
thereunder, nor does any condition exist that with notice or lapse of time or
both would constitute a default thereunder.

                  3.9 Title to Properties. The Company has good, record and
marketable title in fee simple to, or holds interests in as lessee or sublessee
under leases or subleases in full force and effect, all real property used in
connection with its business or otherwise owned or leased or subleased by it,
except for such defects in title and leasehold interests as would not,
individually or in the aggregate, have a material adverse effect on the
Condition of the Company, or a material adverse effect on the ability of the
Company to perform its obligations under this Agreement or the other Transaction
Documents.

                  3.10 FIRPTA. The Company is not a "foreign person" within the
meaning of Section 1445 of the Code.


                  3.11 Financial Statements. The Company has delivered to the
Purchasers unaudited statements (i) of the financial condition of Priceline LLC
as of December 31, 1997 and June 30, 1998 (collectively, the "Balance Sheets")
and (ii) of operations and changes in members' capital for the one-year period
ended December 31, 1997 and the six-month period ended June 30, 1998
(collectively, the "Statements of Operations and Capital," and, together with
the Balance Sheets, the "Financial Statements"). Each of the Financial
Statements has been prepared in accordance with GAAP applied on a consistent
basis throughout the periods indicated, except for normal year-end adjustments
and the omission of footnotes. Each of the Balance Sheets fairly presents the
financial position of Priceline LLC as of the date thereof. Each of the
Statements of Operations and Capital fairly presents, in all material respects,
the results of operations and changes in members' capital, for the period then
ended. The Financial Statements consist of all the financial statements of the
Company since its inception.

                  3.12 Taxes. (a) The Company has paid all federal, state,
county, local, foreign and other taxes, including, without limitation, income
taxes, estimated taxes,



                                       15
<PAGE>

excise taxes, sales taxes, use taxes, gross receipts taxes, franchise taxes,
employment and payroll related taxes, property taxes and import duties, whether
or not measured in whole or in part by net income (hereinafter, "Taxes" or,
individually, a "Tax") which have come due and are required to be paid by it
through the date hereof, and all deficiencies or other additions to Tax,
interest and penalties owed by it in connection with any such Taxes; (b) the
Company has timely filed or caused to be filed all returns for Taxes that it is
required to file on and through the date hereof (including all applicable
extensions), and all such Tax returns are accurate and complete; (c) the Company
has not received any notice of deficiency with respect to any Tax return and, to
the knowledge of the Company, no audit is in progress with respect to any return
for Taxes, no extension of time is in force with respect to any date on which
any return for Taxes was or is to be filed and no waiver or agreement is in
force for the extension of time for the assessment or payment of any Tax; (d)
all liabilities for Taxes of the Company attributable to periods prior to or
ending on the Closing Date have been provided for on the Financial Statements in
accordance with GAAP; and (e) there are no Liens for Taxes on the assets of the
Company except for Liens for current Taxes not yet due or with respect to Taxes
being disputed in good faith by the Company.

                  3.13 No Material Adverse Change; Ordinary Course of Business.
Since January 1, 1998, (a) there has not been any material adverse change nor,
to the knowledge of the Company is any such material adverse change threatened,
in the Condition of the Company, (b) the Company has not declared, paid or made
any dividend or any distribution to its stockholders except as set forth on
Schedule 3.13 and (c) the Company has not increased the compensation of any of
its officers or the rate of pay of any of its employees, except as part of
regular compensation increases in the ordinary course of business.

                  3.14 Investment Company. The Company is not an "investment
company" within the meaning of the Investment Company Act of 1940, as amended.

                  3.15 Private Offering. No form of general solicitation or
general advertising was used by the Company or its representatives in connection
with the offer or sale of the Purchased Shares. Subject in part to the truth and
accuracy of each Purchaser's representations and warranties set forth in Section
4 hereof, no registration of the Purchased Shares, pursuant to the provisions of
the Securities Act or any state securities or "blue sky" laws, will be required
by the offer, sale or issuance of the Purchased Shares. The Company agrees that
neither it, nor anyone acting on its behalf, shall offer to sell the Purchased
Shares or any other securities of the Company so as to require the registration
of the Purchased Shares pursuant to the provisions of the Securities Act or any
state securities or "blue sky" laws, unless such Purchased Shares or other
securities are so registered.

                                       16
<PAGE>
                  3.16 Labor Relations. (a) The Company is not engaged in any
unfair labor practice; (b) there is (i) no grievance or arbitration proceeding
arising out of or under collective bargaining agreements pending or, to the
knowledge of the Company, threatened against the Company, and (ii) no strike,
labor dispute, slowdown or stoppage pending or, to the knowledge of the Company,
threatened against the Company; (c) the Company is not a party to any collective
bargaining agreement; (d) there is no union representation question existing
with respect to the employees of the Company, and (e) to the knowledge of the
Company, no union organizing activities are taking place at any facility of the
Company.

                  3.17 Employee Benefit Plans. Neither the Company nor any of
its ERISA Affiliates has any actual or contingent, direct or indirect, liability
in respect of any employee benefit plan or arrangement, including any plan
subject to ERISA, other than to make contributions under or pay benefits
pursuant to the plans listed on Schedule 3.17 (collectively, the "Plans"). All
of the Plans are in material compliance with all applicable Requirements of Law.
Except as set forth on Schedule 3.1 no Plan (a) is subject to Title IV of ERISA,
or is otherwise a Defined Benefit Plan, or is a multiple employer plan (within
the meaning of Section 413(c) of the Code); or (b) provides for post-retirement
welfare benefits or a "parachute payment" (within the meaning of Section 280G(b)
of the Code). The execution and delivery of this Agreement and each of the other
Transaction Documents, the purchase and sale of the Purchased Shares and the
consummation of the transactions contemplated hereby and thereby will not result
in any prohibited transaction within the meaning of Section 406 of ERISA or
Section 4975 of the Code.

                  3.18 Title to Assets. Except as set forth on Schedule 3.18,
the Company owns and has good, valid, and marketable title to all of its
properties and assets used in its business and reflected as owned on the
Financial Statements or so described in Schedule 3.18 (collectively, the
"Assets"), in each case free and clear of all Liens other than Permitted Liens
and Liens specifically described on the notes to the Financial Statements.

                  3.19 Liabilities. The Company does not have any direct or
indirect obligation or liability (the "Liabilities") other than (a) Liabilities
fully and adequately reflected or reserved against on the Financial Statements
and (b) Liabilities incurred since July 1, 1997 in the ordinary course of
business.


                  3.20 Intellectual Property.

                           (a) (i) The Company is the owner of, or has the
license or right to use, sell and license, all of the Copyrights, Patents, Trade
Secrets, Trademarks, Internet Assets, Software and other proprietary rights
(collectively, "Intellectual Property") that are used in connection with its
business as presently conducted or contemplated in its business plan.

                                       17
<PAGE>

                           (ii) Schedule 3.20(a)(ii) sets forth all of the
Intellectual Property owned by the Company, and filings and applications for any
of the above filed by the Company or WAMP. Except as set forth on Schedule
3.20(a)(ii), none of the Intellectual Property listed on Schedule 3.20(a)(ii) is
subject to any outstanding Order, and no action, suit, proceeding, hearing,
investigation, charge, complaint, claim or demand is pending or, to the
knowledge of the Company, threatened, whic challenges the validity,
enforceability, use or ownership of any item of the Intellectual Property.

                           (iii) Schedule 3.20(a)(iii) sets forth all
Intellectual Property licenses, sublicenses, distributor agreements and other
agreements under which the Company is either a licensor, licensee or
distributor, except such licenses, sublicenses and other agreements relating to
off-the-shelf software which are commercially available on a retail basis and
used solely on the computers of the Company. The Company has substantially
performed all obligations imposed upon it thereunder,
and the Company is not, and to the knowledge of the Company no other party
thereto is, in breach of or default thereunder in any respect, nor is there any
event which with notice or lapse of time or both would constitute a default
thereunder. All of the Intellectual Property licenses listed on Schedule
3.20(a)(iii) are valid, enforceable and in full force and effect against the
Company and, to the knowledge of the Company, against the other parties to such
licenses, and will continue to be so on identica terms immediately following the
Closing except as enforceability may be limited by applicable bankruptcy,
insolvency, reorganization, fraudulent conveyance or transfer, moratorium or
similar laws affecting the enforcement of creditors' rights generally and by
general principles of equity relating to enforceability.

                           (iv) To the knowledge of the Company, other than as
set forth on Schedule 3.20(a)(iv), none of the Intellectual Property currently
sold or licensed by the Company to any Person or used by or licensed to the
Company infringes upon or otherwise violates any Intellectual Property rights of
others.

                           (v) Except as set forth on Schedule 3.20(a)(v), no
litigation is pending and no Claim has been received by the Company or, to the
knowledge of the Company, is threatened, contesting the right of the Company to
sell or license to any Person or use the Intellectual Property presently sold or
licensed to such Person or used by the Company.

                           (b) Except as set forth on Schedule 3.20(b), to the
knowledge of the Company, no Person is infringing upon or otherwise violating
the Intellectual Property rights of the Company.


                           (c) No former employer of any employee of the
Company, and no current or former client of any consultant of the Company, has
made a claim against the Company or, to the knowledge of the Company, against
any former employer of such


                                       18
<PAGE>

employee or consultant, that such employee or such consultant is utilizing for
the benefit of the Company Intellectual Property of such former employer or
client.

                           (d) Except as set forth on Schedule 3.20(d), the
Company is not a party to or bound by, any license or other agreement requiring
the payment of any material royalty payment, excluding such agreements relating
to software licensed for use solely on the computers of the Company.


                           (e) To the knowledge of the Company, no employee of
the Company is in violation in any material respect of any Requirement of Law
applicable to such employee, or any term of any employment agreement, patent or
invention disclosure agreement or other contract or agreement relating to the
relationship of such employee with the Company.

                           (f) To the knowledge of the Company, none of the
Trade Secrets, wherever located, the value of which is contingent upon
maintenance of confidentiality thereof, has been disclosed to any Person not a
party to a non-disclosure or confidentiality agreement with the Company other
than employees, representatives and agents of the Company, except as required
pursuant to the filing of a patent application by the Company.

                           (g) It is not necessary for the Company's business to
use any Intellectual Property owned by any director, officer, employee or
consultant of the Company (or persons the Company presently intends to hire). At
no time during the conception or reduction to practice of any of the Company's
Intellectual Property was any developer, inventor or other contributor to such
Intellectual Property operating under any grants from any Governmental Authority
or subject to any employment agreement, invention assignment, nondisclosure
agreement or other Contractual Obligation with any third party that could
adversely affect the Company's rights to its Intellectual Property.

                  3.21 Year 2000 Compliance. To the knowledge of the Company,
the proprietary Software used by the Company will, and no material expenditure
is required by the Company to make such Software, (a) accurately process date
information before, during and after January 1, 2000, including, but not limited
to, accepting date input, providing date output and performing calculations on
dates or portions of dates; (b) function accurately and without interruption
before, during and after January 1, 2000 without any change in operations
associated with the advent of the new century; (c) respond to two (2) digit year
date input in a way that resolves the ambiguity as to century in a disclosed,
defined and predetermined manner; and (d) store and provide output of date
information in ways that are unambiguous as to century.

                                       19
<PAGE>

                  3.22 Network Redundancy and Computer Back-Up. Except as set
forth on Schedule 3.22.

                           (a) The server hardware and supporting equipment
(including communications equipment, terminals and hook-ups that interface with
airline computer reservation systems) used in the Company's services network
provide redundancy and meet industry standards relating to high availability;
and

                           (b) The Company has made back-ups of all material
computer Software and databases utilized by it and maintain such Software and
databases at a secure off-site location.

                  3.23 Privacy of Customer Information. The Company does not use
any of the customer information it receives through its website in an unlawful
manner or in a manner violative of the rights of privacy of its customers. The
Company has reasonably adequate security measures in place to protect the
customer information it receives through its website from illegal use by third
parties or use by third parties in a manner violative of the rights of privacy
of its customers. The Company represents to its customers that it keeps secure
the customer information its receives through its website, but does not
guarantee security.

                  3.24 Potential Conflicts of Interest. Except as set forth on
Schedule 3.24, no officer, director or stockholder of the Company, no spouse of
any such officer, director or stockholder, and, to the knowledge of the Company,
no relative of such spouse or of any such officer, director or stockholder and
no Affiliate of any of the foregoing (a) owns, directly or indirectly, any
interest in (excepting less than 1% stock holdings for investment purposes in
securities of publicly held and traded companies), or is an officer, director,
employee or consultant of, any Person which is, or is engaged in business as, a
competitor, lessor, lessee, supplier, distributor, sales agent or customer of,
or lender to or borrower from, the Company; (b) owns, directly or indirectly, in
whole or in part, any tangible or intangible property that the Company has used,
or that the Company will use, in the conduct of business; or (c) has any cause
of action or other claim whatsoever against, or owes or has advanced any amount
to, the Company, except for claims in the ordinary course of business such as
for accrued vacation pay, accrued benefits under employee benefit plans, and
similar matters and agreements existing on the date hereof.

                  3.25 Trade Relations. There exists no actual or, to the
knowledge of the Company, threatened termination, cancellation or limitation of,
or any adverse modification or change in, the business relationship of the
Company, or the business of the Company, with any customer or supplier or any
group of customers or suppliers including, without limitation, Transworld
Airlines, America West Airlines or any International Carrier, whose purchases or
inventories provided to the Company's business



                                       20
<PAGE>

are individually or in the aggregate material to the Condition of the Company,
and there exists no present condition or state of fact or circumstances that
would materially adversely affect the Condition of the Company or materially
prevent the Company from conducting such business relationships or such business
with any such customer, supplier or group of customers or suppliers in
substantially the same manner as heretofore conducted by the Company.

                  3.26 Outstanding Borrowing. Schedule 3.26 sets forth (a) the
amount of all Indebtedness of the Company as of the date hereof, (b) the Liens
that relate to such Indebtedness and that encumber the Assets and (c) the name
of each lender thereof.

                  3.27 Insurance. Schedule 3.27 lists all of the insurance
policies held by or on behalf of the Company, with the effective date and
coverage amounts indicated thereon. Such policies and binders are valid and
enforceable in accordance with their terms and are in full force and effect and
covers all risks associated with the Company's business that are customarily
insured against in the industry in such amounts as are customary in the
industry. None of such policies will be affected by, or terminate or lapse by
reason of, any transaction contemplated by this Agreement or any of the other
Transaction Documents.

                  3.28 Environmental Matters. The Company is in compliance in
all material respects with all applicable Environmental Laws. There is no civil,
criminal or administrative judgment, action, suit, demand, claim, hearing,
notice of violation, investigation, proceeding, notice or demand letter pending
or, to the knowledge of the Company, threatened against the Company pursuant to
Environmental Laws which would reasonably be expected to result in a fine,
penalty or other obligation, cost o expense that would have a material adverse
affect on the Condition of the Company; and, to the knowledge of the Company,
there are no past or present events, conditions, circumstances, activities,
practices, incidents, agreements, actions or plans of or relating to the Company
which may prevent compliance with, or which have given rise to or will give rise
to liability under, Environmental Laws that would have a material adverse affect
on the Condition of the Company.

                  3.29 Broker's, Finder's or Similar Fees. There are no
brokerage commissions, finder's fees or similar fees or commissions payable by
the Company in connection with the transactions contemplated hereby based on any
agreement, arrangement or understanding with the Company or any action taken by
any such Person.

                  3.30 WAMP Assets. WAMP owns no assets used by, or necessary
for the conduct of business of, the Company.

                                       21
<PAGE>


                  3.31 Breitenbach Agreement. The option granted to Paul
Breitenbach in Section 3(e) of the Breitenbach Agreement relates only to a
potential business unit of WDC, not the Company.

                  3.32 Affiliate Payments. All payments made by the Company to
WDC pursuant to the Purchase and Intercompany Services Agreement (the "PISA"),
dated as of April 6, 1998, among WAMP, WDC, the Company and PriceLine Travel,
for services provided by WDC are made on the same basis as if the Company were
paying an unaffiliated third party for similar services pursuant to an arm's
length transaction.

                  3.33 Employees. The Company employs, or contracts with
consultants for, all personnel necessary for the operation of its business.


                  3.34 Financial Projections. The financial projections provided
to the Purchasers by the Company regarding airline ticket sales were reasonably
prepared based upon the best available information and the Financial Statements.


                  3.35 Disclosure.

                           (a) Material Adverse Effects. There is no fact known
to the Company, which the Company has not disclosed to the Purchasers either
orally or in writing, which materially adversely affects, the Condition of the
Company or the ability of the Company to perform its obligations under this
Agreement, any of the other Transaction Documents or any document contemplated
hereby or thereby.

                                    ARTICLE 4
                           REPRESENTATIONS AND WARRANTIES
                                OF THE PURCHASERS


                  Each of the Purchasers hereby represents and warrants
(severally as to itself and not jointly) to the Company as follows:

                  4.1 Existence and Power. Such Purchaser (a) is a partnership
duly organized and validly existing under the laws of the jurisdiction of its
formation and (b) has the requisite partnership power and authority to execute,
deliver and perform its obligations under this Agreement and each of the other
Transaction Documents to which it is a party.

                  4.2 Authorization; No Contravention. The execution, delivery
and performance by such Purchaser of this Agreement and each of the other
Transaction 



                                       22
<PAGE>

Documents to which it is a party and the transactions contemplated hereby and
thereby, including, without limitation, the purchase of the Purchased Shares,
(a) have been duly authorized by all necessary partnership action, (b) do not
contravene the terms of such Purchaser's organizational documents, or any
amendment thereof, (c) do not violate, conflict with or result in any breach or
contravention of or the creation of any Lien under, any Contractual Obligation
of such Purchaser, or any Requirement of Law applicable to such Purchaser and
(d) do not violate any Order of any Governmental Authority against, or binding
upon, such Purchaser.

                  4.3 Governmental Authorization; Third Party Consents. No
approval, consent, compliance, exemption, authorization, or other action by, or
notice to, or filing with, any Governmental Authority or any other Person, and
no lapse of a waiting period under any Requirement of Law, is necessary or
required in connection with the execution, delivery or performance (including,
without limitation, the purchase of the Purchased Shares) by, or enforcement
against, such Purchaser of this Agreement and each of the other Transaction
Documents to which such Purchaser is a party or the transactions contemplated
hereby and thereby.

                  4.4 Binding Effect. This Agreement and each of the other
Transaction Documents to which such Purchaser is a party have been duly executed
and delivered by such Purchaser and constitute the valid and binding obligations
of such Purchaser, enforceable against it in accordance with its terms, except
as enforceability may be limited by applicable bankruptcy, insolvency,
reorganization, fraudulent conveyance or transfer, moratorium or similar laws
affecting the enforcement of creditors' rights generally or by equitable
principles relating to enforceability (regardless of whether considered in a
proceeding at law or in equity).

                  4.5 Purchase for Own Account. The Purchased Shares to be
acquired by such Purchaser pursuant to this Agreement, and the Common Stock
acquired upon conversion of the Preferred Stock, are being or will be acquired
for its own account and with no intention of distributing or reselling such
securities or any part thereof in any transaction that would be in violation of
the securities laws of the United States of America, or any state. If such
Purchaser should in the future decide to dispose of any of such Purchased
Shares, such Purchaser understands and agrees that it may do so only in
compliance with the Securities Act and applicable state securities laws, as then
in effect. Such Purchaser agrees to the imprinting, so long as required by law,
of legends on certificates representing all of its Purchased Shares and shares
of Common Stock issuable upon conversion of its Purchased Shares to the
following effect:

         THE SECURITIES REPRESENTED BY THIS CERTIFICATE HAVE NOT BEEN REGISTERED
         UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE "ACT"), OR THE
         SECURITIES LAWS OF ANY 



                                       23
<PAGE>

         STATE. THE SECURITIES MAY NOT BE TRANSFERRED EXCEPT PURSUANT TO AN
         EFFECTIVE REGISTRATION STATEMENT UNDER SUCH ACT AND APPLICABLE STATE
         SECURITIES LAWS OR PURSUANT TO AN APPLICABLE EXEMPTION FROM THE
         REGISTRATION REQUIREMENTS OF SUCH ACT AND SUCH LAWS.

         THE SALE, ASSIGNMENT, HYPOTHECATION, PLEDGE, ENCUMBRANCE OR OTHER
         DISPOSITION (EACH A "TRANSFER") AND VOTING OF ANY OF THE SECURITIES
         REPRESENTED BY THIS CERTIFICATE ARE RESTRICTED BY THE TERMS OF THE
         STOCKHOLDERS AGREEMENT, DATED JULY 31, 1998, AMONG PRICELINE.COM
         INCORPORATED, GENERAL ATLANTIC PARTNERS 48, L.P., GAP COINVESTMENT
         PARTNERS, L.P. AND THE STOCKHOLDERS NAMED THEREIN. THE COMPANY WILL NOT
         REGISTER THE TRANSFER OF SUCH SECURITIES ON THE BOOKS OF THE COMPANY
         UNLESS AND UNTIL THE TRANSFER HAS BEEN MADE IN COMPLIANCE WITH THE
         TERMS OF THE STOCKHOLDERS AGREEMENT. THE COMPANY WILL MAIL A COPY OF
         SUCH AGREEMENT, TOGETHER WITH A COPY OF THE EXPRESS TERMS OF THE
         SECURITIES AND THE OTHER CLASS OR CLASSES AND SERIES OF SHARES, IF ANY,
         WHICH THE COMPANY IS AUTHORIZED TO ISSUE, TO THE RECORD HOLDER OF THIS
         CERTIFICATE, WITHOUT CHARGE, WITHIN FIVE DAYS AFTER RECEIPT OF A
         WRITTEN REQUEST THEREFOR.

                  4.6 Restricted Securities. Such Purchaser understands that the
Purchased Shares will not be registered at the time of their issuance under the
Securities Act for the reason that the sale provided for in this Agreement is
exempt pursuant to Section 4(2) of the Securities Act and that the reliance of
the Company on such exemption is predicated in part on such Purchaser's
representations set forth herein. Such Purchaser represents that it is
experienced in evaluating companies such a the Company, has such knowledge and
experience in financial and business matters as to be capable of evaluating the
merits and risks of its investment and has the ability to suffer the total loss
of its investment. Such Purchaser further represents that it has had the
opportunity to ask questions of and receive answers from the Company concerning
the terms and conditions of the offering and to obtain additional information to
such Purchaser's satisfaction.

                  4.7 Broker's, Finder's or Similar Fees. There are no brokerage
commissions, finder's fees or similar fees or commissions payable by the
Purchasers, in connection with the transactions contemplated hereby based on any
agreement, arrangement or understanding with the Purchasers or any action taken
by the Purchasers.

                                       24
<PAGE>

                  4.8 Accredited Investor. Each of the Purchasers is an
"Accredited Investor" within the meaning of Rule 501 of Regulation D under the
Securities Act, as presently in effect.

                  4.9 Litigation. No action, suit, proceeding, claim, complaint,
dispute, arbitration or investigation has been instituted or, to the knowledge
of such Purchaser, is threatened to restrain or prohibit or otherwise challenge
the legality or validity of the transactions contemplated by this Agreement or
any of the other Transaction Documents. No Order has been issued by any court or
other Governmental Authority against such Purchaser purporting to enjoin or
restrain the execution, delivery or performance of this Agreement or any of the
other Transaction Documents.


                                    ARTICLE 5
                        CONDITIONS TO THE OBLIGATION OF
                             THE PURCHASES TO CLOSE
                        --------------------------------

                  The obligation of the Purchasers to purchase the Purchased
Shares, to pay the purchase price therefor at the Closing and to perform any
obligations hereunder shall be subject to the satisfaction as determined by, or
waiver by, the Purchasers of the following conditions on or before the Closing
Date.

                  5.1 Representations and Warranties. The representations and
warranties of the Company contained in Article 3 hereof shall be true and
correct in all material respects at and on the Closing Date as if made at and on
such date.

                  5.2 Compliance with this Agreement. The Company shall have
performed and complied in all material respects with all of the agreements and
conditions set forth herein that are required to be performed or complied with
by the Company on or before the Closing Date.


                  5.3 Secretary's Certificate. The Purchasers shall have
received a certificate from the Company, in form and substance reasonably
satisfactory to the Purchasers, dated the Closing Date and signed by the
Secretary or an Assistant Secretary of the Company, certifying that the attached
copies of the Certificate of Incorporation, the By-laws, the Certificate of
Designation and resolutions of the Board of Directors approving this Agreement
and each of the other Transaction Documents to which the Company is a party and
the transactions contemplated hereby and thereby, are all true, complete and
correct and remain unamended and in full force and effect.

                                       25
<PAGE>

                  5.4 Officer's Certificate. The Purchasers shall have received
a certificate from the Company, in form and substance reasonably satisfactory to
the Purchasers, dated the Closing Date and signed by the Chief Executive Officer
and Chief Financial Officer of the Company, certifying that (a) the
representations and warranties of the Company contained in Article 3 hereof are
true and correct in all material respects on the Closing Date and (b) the
Company has performed and complied in al material respects with all of the
agreements and conditions set forth or contemplated herein that are required to
be performed or complied with by the Company on or before the Closing Date.

                  5.5 Filing of Certificate of Designation. The Certificate of
Designation shall have been duly filed by the Company with the Secretary of
State of the State of Delaware in accordance with the General Corporation Law of
the State of Delaware.

                  5.6 Stockholders Agreement. The Company and the Stockholders
shall have duly executed and delivered the Stockholders Agreement, substantially
in the form attached hereto as Exhibit C.

                  5.7 Registration Rights Agreement. The Company and the
Stockholders shall have duly executed and delivered the Registration Rights
Agreement, substantially in the form attached hereto as Exhibit D.

                  5.8 Opinion of Counsel. The Purchasers shall have received an
opinion of Cummings & Lockwood and/or Skadden, Arps, Slate, Meagher & Flom, LLP,
counsel to the Company, dated the Closing Date, relating to the transactions
contemplated by or referred to herein, substantially in the form attached hereto
as Exhibit E.

                  5.9 Purchased Shares. The Company shall be prepared to deliver
to the Purchasers certificates in definitive form representing the number of
Purchased Shares set forth opposite such Purchaser's name on Schedule 2.1
hereto, registered in the name of such Purchaser, as applicable.

                  5.10 Consents and Approvals. The Company shall have provided
the Purchasers with evidence, in form and substance reasonably satisfactory to
the Purchasers, that (a) each consent, exemption, authorization and notice set
forth on Schedule 5.10 has been obtained or made, or that the requirement for
such action has been, to the extent permitted by Applicable Law, waived, and (b)
all applicable waiting periods shall have expired (or early termination of such
waiting periods shall have been obtained).

                                       26
<PAGE>

                  5.11 No Material Judgment or Order. There shall not be on the
Closing Date any Order of a court of competent jurisdiction or any ruling of any
Governmental Authority or any condition imposed under any Requirement of Law
which would, in the judgment of the Purchasers, (a) prohibit or restrict (i) the
purchase of the Purchased Shares or (ii) the consummation of the transactions
contemplated by this Agreement, (b) subject the Purchasers to any penalty or
onerous condition under or pursuant to any Requirement of Law if the Purchased
Shares were to be purchased hereunder, or (c) restrict the operation of the
business of the Company as conducted on the date hereof in a manner that would
have a material adverse effect on the Condition of the Company.

                  5.12 No Litigation. No action, suit, proceeding, claim or
dispute shall have been brought or otherwise arisen at law, in equity, in
arbitration or before any Governmental Authority against the Company which
would, if adversely determined, (a) have a material adverse effect on the
Condition of the Company or (b) have a material adverse effect on the ability of
the Company to perform its obligations under this Agreement or each of the other
Transaction Documents.

                  5.13 Incorporation of the Company. The Purchasers shall have
received copies of all documents, in form and substance satisfactory to the
Purchasers, evidencing the incorporation of the Company and the succession of
the Company to the business of Priceline LLC.


                  5.14 Chief Executive Officer. The Company shall have recruited
and hired a new chief executive officer (the "Chief Executive Officer"), the
choice and terms and conditions of which appointment shall be reasonably
acceptable to the Purchasers, subject to the execution of a definitive
employment agreement.

                  5.15 Side Agreement. PriceLine Travel and Jay Walker (the
"Side Parties") shall have executed a side agreement (the "Side Agreement")
pursuant to which:

                           (a)      The Side Parties shall agree to cause
                                    PriceLine Travel to become a wholly-owned
                                    subsidiary of the Company by the earlier to
                                    occur of (such date, the "Subsidiary Date"):
                                    (i) December 31, 1998, and (ii) the
                                    effective date of the Initial Public
                                    Offering;

                           (b)      PriceLine Travel shall agree not to issue
                                    any equity securities or securities
                                    convertible into equity securities to any
                                    Person on or before the Subsidiary Date;

                           (c)      Jay Walker shall grant a call option (the
                                    "PriceLine Travel Option") to each of the
                                    Purchasers, such option to be 



                                       27
<PAGE>

                                    exercisable at any time prior to the
                                    Subsidiary Date, to purchase all of Jay
                                    Walker's interests in PriceLine Travel; and

                           (d)      Jay Walker shall agree not to transfer any
                                    of his interests in PriceLine Travel prior
                                    to the Subsidiary Date.



                                   ARTICLE 6
                          CONDITIONS TO THE OBLIGATION
                            OF THE COMPANY TO CLOSE
                          -----------------------------

                  The obligation of the Company to issue and sell the Purchased
Shares and the obligation of the Company to perform its other obligations
hereunder, shall be subject to the satisfaction as determined by, or waiver by,
the Company of the following conditions on or before the Closing Date:

                  6.1 Representation and Warranties. The representations and
warranties of the Purchasers contained in Article 4 hereof shall be true and
correct in all material respects at and on the Closing Date as if made at and on
such date.


                  6.2 Compliance with this Agreement. Each of the Purchasers
shall have performed and complied in all material respects with all of the
agreements and conditions set forth herein that are required to be performed or
complied with by such Purchaser on or before the Closing Date.

                  6.3 General Partners' Certificates. The Company shall have
received a certificate from a general partner of each of GAP LP and GAP
Coinvestment, in form and substance reasonably satisfactory to the Company,
dated the Closing Date and signed by such general partner, certifying that (a)
the representations and warranties of GAP LP or GAP Coinvestment, as the case
may be, contained in Article 4 hereof are true and correct in all material
respects on the Closing Date, and (b) GAP LP or GAP Coinvestment, as the case
may be, has performed and complied with all of the agreements and conditions set
forth or contemplated herein that are required to be performed or complied with
by GAP LP or GAP Coinvestment, as the case may be, on or before the Closing
Date.

                  6.4 Stockholders Agreement. The Purchasers shall have duly
executed and delivered the Stockholders Agreement, substantially in the form
attached hereto as Exhibit C.

                                       28
<PAGE>

                  6.5 Registration Rights Agreement. The Purchasers shall have
duly executed and delivered the Registration Rights Agreement, substantially in
the form attached hereto as Exhibit D.

                  6.6 Opinion of Purchasers' Counsel. The Company shall have
received an opinion of Paul, Weiss, Rifkind, Wharton & Garrison, dated the
Closing Date, relating to the transactions contemplated by or referred to
herein, substantially in the form attached hereto as Exhibit F.


                  6.7 No Material Judgment or Order. There shall not be on the
Closing Date any Order of a court of competent jurisdiction or any ruling of any
Governmental Authority or any condition imposed under any Requirement of Law
which would, in the judgment of the Company, (a) prohibit or restrict (i) the
sale of the Purchased Shares or (ii) the consummation of the transactions
contemplated by this Agreement, or (b) subject the Company to any penalty or
onerous condition under or pursuant to any Requirement of Law if the Purchased
Shares were to be sold hereunder.

                  6.8 Payment of Purchase Price. Each Purchaser shall have
delivered the purchase price specified in Schedule 2.1 for the purchase of the
Preferred Stock.

                  6.9 Qualifications. All authorizations, approvals or permits
of any Governmental Authority that are required in connection with the lawful
issuance and sale of the Preferred Stock shall have been obtained and be
effective as of the Closing.


                                   ARTICLE 7

                                INDEMNIFICATION
                                ---------------


                  7.1 Indemnification. Except as otherwise provided in this
Article 7, the Company (the "Indemnifying Party") agrees to indemnify, defend
and hold harmless the Purchasers and their Affiliates and their respective
officers, directors, agents, employees, subsidiaries, partners, members and
controlling persons (each, an "Indemnified Party") to the fullest extent
permitted by law from and against any and all losses, Claims (including any
Claim by a third party), damages, expenses (including reasonable fees,
disbursements and other charges of one counsel incurred by the Indemnified Party
in any action between the Indemnifying Party and the Indemnified Party or
between the Indemnified Party and any third party or otherwise) or other
liabilities (collectively, "Losses") resulting from, arising out of or relating
to any breach of any representation or warranty, covenant or agreement by the
Company in this Agreement or the other Transaction Documents, including, without
limitation, any legal, administrative or other actions (including actions
brought by the Purchasers or the Company or any 




                                       29
<PAGE>

equity holders of the Company or derivative actions brought by any Person
claiming through or in the Company's name), proceedings or investigations
(whether formal or informal), or written threats thereof, based upon, relating
to or arising out of this Agreement or the other Transaction Documents, the
transactions contemplated hereby and thereby, or any Indemnified Party's role
therein or in transactions contemplated thereby; provided, that the Indemnifying
Party shall not be liable under this Section 7.1 to any Indemnified Party to the
extent that it is finally judicially determined that such Losses resulted
primarily from the material breach by any Indemnified Party of any
representation, warranty, covenant or other agreement of an Indemnified Party
contained in this Agreement; and provided, further, that if and to the extent
that such indemnification is unenforceable for any reason, the Indemnifying
Party shall make the maximum contribution to the payment and satisfaction of
such Losses which shall be permissible under applicable laws. The amount of any
payment by the Company to any Indemnified Party herewith in respect of any Loss
shall be of sufficient amount to make such Indemnified Party whole, including
without limitation or duplication, an amount sufficient to make up any
diminution in the value of the Purchased Shares held by such Indemnified Party
resulting from the payment by the Company of such indemnification payment. In
connection with the obligation of the Indemnifying Party to indemnify for
expenses as set forth above, the Indemnifying Party shall, upon presentation of
appropriate invoices containing reasonable detail, reimburse each Indemnified
Party for all such expenses (including reasonable fees, disbursements and other
charges of counsel incurred by the Indemnified Party in any action between the
Indemnifying Party and the Indemnified Party or between the Indemnifie Party and
any third party or otherwise) as they are incurred by such Indemnified Party;
provided, however, that if an Indemnified Party is reimbursed hereunder for any
expenses, such reimbursement of expenses shall be refunded to the extent it is
finally judicially determined that the Losses in question resulted primarily
from the willful misconduct or gross negligence of such Indemnified Party.

                  7.2 Indemnification by Purchasers. Except as otherwise
provided in this Article 7, each of the Purchasers, severally and not jointly
(each, a "Purchaser Indemnifying Party"), agrees to indemnify, defend and hold
harmless the Company, its officers, directors, agents, employees, subsidiaries
and controlling persons (each, a "Purchaser Indemnified Party") to the fullest
extent permitted by law from and against any and all Losses resulting from,
arising out of or relating to any breach of any representation or warranty set
forth in Article 4 hereto; provided, that the Purchaser Indemnifying Party shall
not be liable under this Section 7.2 to the Purchaser Indemnified Party to the
extent that it is finally judicially determined that such Losses resulted
primarily from the material breach by such Purchaser Indemnified Party of any
representation, warranty, covenant or other agreement of such Purchaser
Indemnified Party contained in this Agreement; and provided, further, that if
and to the extent that such indemnification is unenforceable for any reason, the
Purchaser Indemnifying Party shall 



                                       30
<PAGE>

make the maximum contribution to the payment and satisfaction of such Losses
which shall be permissible under applicable laws. The aggregate amount of
indemnification payments payable to the Purchaser Indemnified Party shall not
exceed the aggregate purchase price paid by such Purchaser Indemnifying Party
for its Purchased Shares hereunder.

                  7.3 Seller's Limitation of Liability. (a) Anything in this
Agreement to the contrary notwithstanding, the Indemnifying Party's maximum
liability to any and all of the Indemnified Parties for indemnification under
Section 7.1 (except for Losses resulting from, arising out of or relating to a
breach of any of the representations and warranties set forth in Sections 3.1,
3.2, 3.4, 3.7(a) and 3.9) shall not exceed $20,000,000.

                  7.4 Notification. Each Indemnified Party or Purchaser
Indemnified Party, as the case may be (for purposes of this Section 7.3, an
"Indemnified Party"), under this Article 7 shall, promptly after the receipt of
notice of the commencement of any action, investigation, claim or other
proceeding against such Indemnified Party in respect of which indemnity may be
sought from the Indemnifying Party or Purchaser Indemnifying Party, as the case
may be (for purposes of this Section 7.3, an Indemnifying Party") under this
Article 7, notify the Indemnifying Party in writing of the commencement thereof.
The omission of any Indemnified Party so to notify the Indemnifying Party of any
such action shall not relieve the Indemnifying Party from any liability which it
may have to such Indemnified Party (a) other than pursuant to this Article 7 or
(b) under this Article 7 unless, and only to the extent that, such Indemnifying
Party has been prejudiced thereby. In case any such action, claim or othe
proceeding shall be brought against any Indemnified Party, and it shall notify
the Indemnifying Party of the commencement thereof, the Indemnifying Party shall
be entitled to assume the defense thereof at its own expense, with counsel
satisfactory to such Indemnified Party in its reasonable judgment; provided,
however, that any Indemnified Party may, at its own expense, retain separate
counsel to participate in such defense at its own expense. Notwithstanding the
foregoing, in any action, claim or proceeding in which both the Indemnifying
Party, on the one hand, and an Indemnified Party, on the other hand, are, or are
reasonably likely to become, a party, such Indemnified Party shall have the
right to employ separate counsel at the expense of the Indemnifying Party and to
control its own defense of such action, claim or proceeding if, in the
reasonable opinion of counsel to such Indemnified Party, a conflict or potential
conflict exists between the Indemnifying Party, on the one hand, and such
Indemnified Party, on the other hand, that would make such separate
representation advisable; provided, however, that the Indemnifying Party shall
not be liable for the fees and expenses of more than one counsel to all
Indemnified Parties. The Indemnifying Party agrees that it will not, without the
prior written consent of the Purchasers, settle, compromise or consent to the
entry of any judgment in any pending or threatened claim, action or proceeding
relating to the matters contemplated hereby (if any Indemnified Party is a party
thereto or has been actually threatened to be



                                       31
<PAGE>

made a party thereto) unless such settlement, compromise or consent includes an
unconditional release of the Purchasers and each other Indemnified Party from
all liability arising or that may arise out of such claim, action or proceeding.
The Indemnifying Party shall not be liable for any settlement of any claim,
action or proceeding effected against an Indemnified Party without the
Indemnifying Party's written consent, which consent shall not be unreasonably
withheld.

                  7.5 Exclusivity of Remedies. The indemnities provided in this
Article 7 shall be the exclusive remedy for breach of this Agreement by any
party hereto other than equitable remedies, including in the form of injunctions
and orders for specific performance.



                                   ARTICLE 8

                             AFFIRMATIVE COVENANTS
                             ---------------------



                  Until the effective date of Initial Public Offering, or
earlier, as applicable, the Company hereby covenants and agrees with the
Purchasers as follows:

                  8.1 Preservation of Existence. The Company shall use its
reasonable commercial efforts to:

                           (a) preserve and maintain in full force and effect
its existence and good standing under the laws of its jurisdiction of formation
or organization;

                           (b) preserve and maintain in full force and effect
all material rights, privileges, qualifications, applications, licenses and
franchises necessary in the normal conduct of its business;

                           (c) use its best efforts to preserve its business
organization;

                           (d) file or cause to be filed in a timely manner all
reports, applications, estimates and licenses that shall be required by a
Governmental Authority and that, if not timely filed, would be reasonably
expected to have a material adverse effect on the Condition of the Company.

                  8.2 PriceLine Travel Reorganization. The Company shall cause
PriceLine Travel to become a wholly-owned subsidiary of the Company by the
earlier to occur of: (a) December 31, 1998, and (b) the effective date of the
Initial Public Offering.

                                       32
<PAGE>


                  8.3 Financial Statements and Other Information. The Company
shall deliver to each Purchaser, in form and substance satisfactory to such
Purchaser:

                           (a) as soon as available, but not later than ninety
 (90) days after the end of each fiscal year of the Company, a copy of the
audited balance sheet of the Company as of the end of such fiscal year and the
related statements of operations and cash flows for such fiscal year, setting
forth in each case in comparative form the figures for the previous year, all in
reasonable detail and accompanied by a management summary and analysis of the
operations of the Company for such fiscal year accompanied by the report of a
nationally recognized independent certified public accounting firm satisfactory
to the Purchasers which report shall state that such financial statements
present fairly the financial condition as of such date and results of operations
and cash flows for the periods indicated in conformity with GAAP applied on a
consistent basis;

                           (b) commencing with the fiscal period ending on
September 30, 1998, as soon as available, but in any event not later than
forty-five (45) days after the end of each of the first three fiscal quarters of
each fiscal year, the unaudited balance sheet of the Company, and the related
statements of operations and cash flows for such quarter and for the period
commencing on the first day of the fiscal year and ending on the last day of
such quarter, all certified by an appropriat officer of the Company as
presenting fairly the financial condition as of such date and results of
operations and cash flows for the periods indicated in conformity with GAAP
applied on a consistent basis, subject to normal year-end adjustments, the
absence of a management's discussion and analysis of financial condition section
and the absence of footnotes required by GAAP; and

                           (c) notwithstanding anything to the contrary set
forth herein, both before and after the effective date of an Initial Public
Offering as promptly as practicable, but not later than five (5) days after a
request by such Purchaser, a certificate signed by the Chief Executive Officer
of the Company that the Company is not a "foreign person" within the meaning of
Section 1445 of the Code.

                  8.4 Annual Budget. Not less than forty-five (45) days prior to
the end of each fiscal year, the Company shall prepare and submit to its Board
of Directors for its approval an operating budget of the Company for the next
fiscal year.


                  8.5 Reservation of Common Stock. The Company shall at all
times reserve and keep available out of its authorized shares of Common Stock,
solely for the purpose of issue or delivery upon conversion of the Purchased
Shares as provided in the Certificate of Incorporation, the maximum number of
shares of Common Stock that may be issuable or deliverable upon such conversion
or exchange. Such shares of Common Stock are duly authorized and, when issued or
delivered in accordance with the 




                                       33
<PAGE>


Certificate of Incorporation and against payment therefor, shall be validly
issued, fully paid and non-assessable. The Company shall issue such shares of
Common Stock in accordance with the terms of the Certificate of Incorporation
and otherwise comply with the terms hereof and thereof.

                  8.6 Insurance. The Company shall use reasonable best efforts
to maintain insurance with insurance companies or associations with a rating of
"A" or better as established by Best's Rating Guide (or an equivalent rating
with such other publication of a similar nature as shall be in current use) in
such amounts and covering such risks as are usually and customarily carried with
respect to similar businesses according to their respective locations.

                  8.7 Books and Records. The Company shall keep proper books of
record and account, in accordance with GAAP consistently applied.

                  8.8 Back-Ups of Computer Software. The Company shall make
back-ups of all material computer software programs and databases and shall
maintain such software programs and databases at a secure off-site location.

                  8.9 Personnel and Assets. The Company shall within 60 days of
the Closing cause WDC to transfer title to the Company of all assets presently
owned by WDC that are used primarily by the Company.


                  8.10 Breitenbach Agreement. The Company agrees that,
notwithstanding any obligation pursuant to the Breitenbach Agreement, it shall
not grant an option to Paul Breitenbach to purchase 10% of a business unit of
the Company.


                  8.11 Stock Option Plan. The Company agrees and covenants to
the Purchasers that within 20 days of the date hereof, the Company shall have
amended Section 3(a) of its stock option plan, the priceline.com LLC 1997
Omnibus Plan, which is attached as Exhibit B to Schedule 3.7(a) (the "Omnibus
Plan"), to reduce the maximum number of shares of Common Stock reserved for
issuance thereunder from 18,000,000 to 14,000,000. If such amendment is not
effected within such time period, the shares of Common Stock reserved for
issuance under the Omnibus Plan in excess of 14,000,000 shall be immediately
treated as Excess Option Shares for purposes of Section 2.4 hereunder, and the
Company shall pay to the Purchasers on the 21st day after the date hereof the
Reimbursement Amounts with respect to such Excess Option Shares.

                                       34
<PAGE>

                                    ARTICLE 9

                                  MISCELLANEOUS
                                  -------------

                  9.1 Survival of Representations and Warranties. All of the
representations and warranties made herein shall survive the execution and
delivery of this Agreement, any investigation by or on behalf of the Purchasers
or acceptance of the Purchased Shares, until 60 days after receipt of the
Company's financial statements for the year ended December 31, 1999, and at the
end of such period, such representations and warranties and related
indemnification rights and obligations with respec thereto shall expire;
provided, however, that the representations and warranties set forth in Sections
3.1, 3.2, 3.4, 3.7(a) and 3.9 shall survive without any expiration and Section
3.12 shall survive until the expiration of the applicable statute of
limitations.

                  9.2 Notices. All notices, demands and other communications
provided for or permitted hereunder shall be made in writing and shall be by
registered or certified first-class mail, return receipt requested, telecopier,
courier service or personal delivery:


                           (a)      if to the Company, to:

                                    priceline.com Incorporated
                                    4 High Ridge Park
                                    Stamford, CT 06905
                                    Telecopy:     (203) 595-8344
                                    Attention:    Mr. Paul E. Francis

                                    with a copy to:

                                    Cummings & Lockwood
                                    Four Stamford Plaza
                                    P.O. Box 120
                                    Stamford, CT 06904
                                    Telecopy:     (203) 351-4299
                                    Attention:    Melissa M. Taub, Esq.

                                    and to:

                                   Skadden, Arps, Slate, Meagher, & Flom, L.L.P.
                                   One Rodney Square
                                   Wilmington, DE  19801
                                   Telecopy:        (302) 651-3001
                                   Attention:       Patricia Moran Chuff, Esq.

                                       35
<PAGE>

                           (b)     if to GAP LP or GAP Coinvestment, to:

                                   c/o General Atlantic Service Corporation
                                   3 Pickwick Plaza
                                   Greenwich, Connecticut 06830
                                   Telecopy:     (203) 622-4098
                                   Attention:    William E. Ford
                                                 David A. Rosenstein, Esq.

                                   with a copy to:

                                   Paul, Weiss, Rifkind, Wharton & Garrison
                                   1285 Avenue of the Americas
                                   New York, New York 10019-6064
                                   Telecopy:        (212) 757-3990
                                   Attention:       Matthew Nimetz, Esq.

                  All such notices and communications shall be deemed to have
been duly given when delivered by hand, if personally delivered; when delivered
by courier, if delivered by commercial courier service; five (5) Business Days
after being deposited in the mail, postage prepaid, if mailed; and when receipt
is mechanically acknowledged, if telecopied.


                  9.3 Successors and Assigns; Third Party Beneficiaries. This
Agreement shall inure to the benefit of and be binding upon the successors and
permitted assigns of the parties hereto. Subject to applicable securities laws,
each of the Purchasers may assign any of its rights under any of the Transaction
Documents to any of its Affiliates. The Company may not assign any of its rights
under this Agreement without the written consent of the Purchasers. Except as
provided in Article 7, n Person other than the parties hereto and their
successors and permitted assigns is intended to be a beneficiary of this
Agreement.

                  9.4      Amendment and Waiver.

                  (a No failure or delay on the part of the Company, or the
Purchasers in exercising any right, power or remedy hereunder shall operate as a
waiver thereof, nor shall any single or partial exercise of any such right,
power or remedy preclude any other or further exercise thereof or the exercise
of any other right, power or remedy. The remedies provided for herein are
cumulative and are not exclusive of any remedies that may be available to the
Company and the Purchasers at law, in equity or otherwise.

                                       36
<PAGE>

                  (b Any amendment, supplement or modification of or to any
provision of this Agreement, any waiver of any provision of this Agreement, and
any consent to any departure by the Company or the Purchasers from the terms of
any provision of this Agreement, shall be effective only if it is made or given
in writing and signed by the Company and the Purchasers.

                  9.5 Counterparts. This Agreement may be executed in any number
of counterparts and by the parties hereto in separate counterparts, each of
which when so executed shall be deemed to be an original and all of which taken
together shall constitute one and the same agreement.

                  9.6 Headings. The headings in this Agreement are for
convenience of reference only and shall not limit or otherwise affect the
meaning hereof.

                  9.7 GOVERNING LAW. THIS AGREEMENT SHALL BE GOVERNED BY AND
CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK, WITHOUT REGARD
TO THE PRINCIPLES OF CONFLICTS OF LAW OF ANY JURISDICTION.


                  9.8 Severability. If any one or more of the provisions
contained herein, or the application thereof in any circumstance, is held
invalid, illegal or unenforceable in any respect for any reason, the validity,
legality and enforceability of any such provision in every other respect and of
the remaining provisions hereof shall not be in any way impaired, unless the
provisions held invalid, illegal or unenforceable shall substantially impair the
benefits of the remaining provisions hereof.

                  9.9 Entire Agreement. This Agreement, together with the
exhibits and schedules hereto, the Confidentiality Agreement with respect to the
transactions contemplated hereby, and the other Transaction Documents, is
intended by the parties as a final expression of their agreement and intended to
be a complete and exclusive statement of the agreement and understanding of the
parties hereto in respect of the subject matter contained herein and therein.
There are no restrictions, promises warranties or undertakings, other than those
set forth or referred to herein or therein. This Agreement, together with the
exhibits and schedules hereto and the other Transaction Documents, supersedes
all prior agreements and understandings between the parties with respect to such
subject matter.

                  9.10 Fees. Upon the Closing, the Company shall reimburse the
Purchasers for their fees, disbursements and other charges of counsel incurred
in connection with the transactions contemplated by this Agreement, provided
that the amount of such reimbursement shall not exceed $50,000.

                                       37
<PAGE>

                  9.11 Publicity. Except as may be required by applicable
Requirement of Law, none of the parties hereto shall issue a publicity release
or public announcement or otherwise make any disclosure concerning this
Agreement or the transactions contemplated hereby, without prior approval by the
other parties hereto (which approval shall not be unreasonably withheld);
provided, however, that nothing in this Agreement shall restrict any Purchaser
from disclosing information (a) that is alread publicly available and (b) to its
attorneys, accountants, consultants and other advisors to the extent necessary
to obtain their services in connection with such Purchaser's investment in the
Company. After the Closing, GAP LLC may disclose on its worldwide web page,
www.gapartners.com, the name of the Company, its address, the identity of the
Chief Executive Officer, a description of the Company's business and the
aggregate dollar amount invested by the Purchasers in the Company. If any
announcement is required by law to be made by any party hereto concerning this
Agreement or the transactions contemplated hereby, prior to making such
announcement such party will deliver a draft of such announcement to the other
parties and shall give the other parties an opportunity to comment thereon.

                  9.12 Further Assurances. Each of the parties shall execute
such documents and perform such further acts (including, without limitation,
obtaining any consents, exemptions, authorizations or other actions by, or
giving any notices to, or making any filings with, any Governmental Authority or
any other Person, and otherwise fulfilling, or causing the fulfillment of, the
conditions to Closing set forth in Articles 5 and 6) as may be reasonably
required or desirable to carry out or to perform the provisions of this
Agreement and to consummate and make effective as promptly as possible the
transactions contemplated by this Agreement.


                  [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK]




                                     38

<PAGE>









                  IN WITNESS WHEREOF, the parties hereto have caused this Stock
Purchase Agreement to be executed and delivered by their respective officers
hereunto duly authorized on the date first above written.


                                 PRICELINE.COM INCORPORATED


                                 By:
                                    --------------------------------------
                                       Name:
                                       Title:


                                 GENERAL ATLANTIC PARTNERS 48, L.P.

                                       By:   GENERAL ATLANTIC PARTNERS, LLC,
                                       its General Partner

                                       By:
                                          --------------------------------
                                              Name:
                                              Title:


                                 GAP COINVESTMENT PARTNERS, L.P.


                                 By:
                                    --------------------------------------
                                       Name:
                                       Title:





<PAGE>





                                                                    Schedule 2.1
                                                                    ------------


                       Purchased Shares and Purchase Price
                       -----------------------------------






<TABLE>
<CAPTION>

   Purchaser                               Purchased Shares       Purchase Price

<S>                                             <C>                  <C>        
GAP LP                                          15,214,042           $17,600,000

GAP Coinvestment                                 2,074,642           $ 2,400,000

Total:                                          17,288,684           $20,000,000


</TABLE>






<PAGE>


                                                                    Exhibit 10.3


- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------


                            STOCK PURCHASE AGREEMENT

                                 by and between

                           PRICELINE.COM INCORPORATED

                                       and

                   THE INVESTORS LISTED ON SCHEDULE 2.1 HERETO

                             -----------------------

                             Dated: December 8, 1998

                             -----------------------


- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
<PAGE>


                                TABLE OF CONTENTS


<TABLE>
<CAPTION>

                                                                            Page
                                                                            ----
<S>                                                                       <C>
ARTICLE 1

      DEFINITIONS..............................................................1
      1.1 Definitions..........................................................1
      1.2 Accounting Terms; Financial Statements...............................9
      1.3 Knowledge of the Company.............................................9

ARTICLE 2

      PURCHASE AND SALE OF SERIES B PREFERRED STOCK............................9
      2.1 Purchase and Sale of Series B Preferred Stock to the Purchaser.......9
      2.2 Certificate of Designations..........................................9
      2.3 Closing..............................................................9
      2.4 Conversion Price Adjustment.........................................10

ARTICLE 3

      REPRESENTATIONS AND WARRANTIES OF THE COMPANY...........................10
      3.1  Corporate Existence and Power......................................10
      3.2  Authorization; No Contravention....................................10
      3.3  Governmental Authorization; Third-Party Consents...................11
      3.4  Binding Effect.....................................................11
      3.5  Litigation.........................................................11
      3.6  Compliance with Laws...............................................11
      3.7  Capitalization.....................................................12
      3.8  No Default or Breach; Contractual Obligations......................13
      3.9  Title to Properties................................................13
      3.10 FIRPTA.............................................................14
      3.11 Financial Statements...............................................14
      3.12 Taxes..............................................................14
      3.13 No Material Adverse Change; Ordinary Course of Business ...........14
      3.14 Investment Company.................................................15
      3.15 Private Offering...................................................15
      3.16 Labor Relations....................................................15
      3.17 Employee Benefit Plans.............................................15
      3.18 Title to Assets....................................................16
      3.19 Liabilities........................................................16
</TABLE>
<PAGE>


<TABLE>
<CAPTION>

                                                                            Page
                                                                            ----
<S>                                                                       <C>

      3.20 Intellectual Property..............................................16
      3.21 Year 2000 Compliance...............................................18
      3.22 Network Redundancy and Computer Back-Up............................18
      3.23 Privacy of Customer Information....................................18
      3.24 Potential Conflicts of Interest....................................19
      3.25 Trade Relations....................................................19
      3.26 Outstanding Borrowing..............................................19
      3.27 Insurance..........................................................19
      3.28 Environmental Matters..............................................20
      3.29 Broker's, Finder's or Similar Fees.................................20
      3.30 WAMP Assets........................................................20
      3.31 Affiliate Payments.................................................20
      3.32 Employees..........................................................20
      3.33 Financial Projections..............................................20
      3.34 Disclosure; Material Adverse Effects...............................21
      3.35 Certain Events.....................................................21

ARTICLE 4

      REPRESENTATIONS AND WARRANTIES OF THE PURCHASER ........................22
      4.1 Existence and Power.................................................22
      4.2 Authorization; No Contravention.....................................22
      4.3 Governmental Authorization; Third-Party Consents....................22
      4.4 Binding Effect......................................................22
      4.5 Purchase for Own Account............................................23
      4.6 Restricted Securities...............................................24
      4.7 Broker's, Finder's or Similar Fees..................................24
      4.8 Accredited Investor.................................................24
      4.9 Litigation..........................................................24

ARTICLE 5

      CONDITIONS TO THE OBLIGATION OF THE PURCHASER TO CLOSE .................24
      5.1 Secretary's Certificate.............................................25
      5.2 Filing of Certificate of Designations...............................25
      5.3 Stockholders Agreement..............................................25
      5.4 Registration Rights Agreement.......................................25
      5.5 Opinion of Counsel..................................................25
</TABLE>
<PAGE>


<TABLE>
<CAPTION>

                                                                            Page
                                                                            ----
<S>                                                                       <C>

      5.6  Purchased Shares...................................................26
      5.7  No Material Judgment or Order......................................26
      5.8  No Litigation......................................................26
      5.9  Preemptive Rights..................................................26
      5.10 Side Agreement.....................................................26

ARTICLE 6

      CONDITIONS TO THE OBLIGATION OF THE COMPANY TO CLOSE ...................27
      6.1 Stockholders Agreement..............................................27
      6.2 Registration Rights Agreement.......................................27
      6.3 No Material Judgment or Order.......................................27
      6.4 Payment of Purchase Price...........................................28
      6.5 Qualifications......................................................28

ARTICLE 7

      INDEMNIFICATION.........................................................28
      7.1 Indemnification.....................................................28
      7.2 Indemnification by Purchaser........................................29
      7.3 Seller's Limitation of Liability....................................30
      7.4 Notification........................................................30
      7.5 Exclusivity of Remedies.............................................31

ARTICLE 8

      AFFIRMATIVE COVENANTS...................................................31
      8.1 Preservation of Existence...........................................31
      8.2 PriceLine Travel Reorganization.....................................31
      8.3 Financial Statements and Other Information..........................32
      8.4 Annual Budget.......................................................32
      8.5 Reservation of Common Stock.........................................32
      8.6 Insurance...........................................................33
      8.7 Books and Records...................................................33
      8.8 Back-Ups of Computer Software.......................................33
      8.9 Confidentiality.  ..................................................33
</TABLE>
<PAGE>


<TABLE>
<CAPTION>

                                                                            Page
                                                                            ----
<S>                                                                       <C>

ARTICLE 9

      MISCELLANEOUS...........................................................33
      9.1   Survival of Representations and Warranties........................33
      9.2   Notices...........................................................34
      9.3   Successors and Assigns; Third-Party Beneficiaries.................34
      9.4   Amendment and Waiver..............................................35
      9.5   Counterparts......................................................35
      9.6   Headings..........................................................35
      9.7   Governing Law.....................................................35
      9.8   Severability......................................................35
      9.9   Entire Agreement..................................................35
      9.10  Publicity.........................................................36
      9.11  Further Assurances................................................36

EXHIBITS

A-1         Certificate of Incorporation........................................
A-2         By-laws.............................................................
B           Form of Certificate of Designations.................................
C           Form of Registration Rights Agreement...............................
D           Form of Stockholders Agreement......................................

SCHEDULES

3.3         Governmental Authorizations; Third Party Consents
3.5         Litigation..........................................................
3.7(a)      List of Stockholders and Capital Stock and Stock
            Equivalents.........................................................
3.8         Defaults or Breaches of Contractual Obligations;
            Contractual Obligations.............................................
3.12        Taxes...............................................................
3.13        Dividends and Distributions.........................................
3.17        Employee Benefit Plans..............................................
3.18        Title to Assets of the Company......................................
3.20(a)(ii) Intellectual Property Owned by the Company or the Subsidiary and
            Applications therefor...............................................
</TABLE>
<PAGE>


<TABLE>
<CAPTION>

                                                                            Page
                                                                            ----
<S>                                                                       <C>

3.20(a)(iii) Intellectual Property Licenses under which the Company or the
             Subsidiary is a Licensor or Licensee ..............................
3.20(a)(iv)  Infringements of the Company or the Subsidiary ....................
3.20(a)(v)   Intellectual Property Litigation ..................................
3.20(b)      Infringement or Violations of Intellectual Property Rights ........
3.20(d)      License Agreements which require a Material Royalty Payment .......
3.22         Network Redundancy and Computer Back-up............................
3.24         Potential Conflicts of Interests...................................
3.26         Outstanding Borrowing..............................................
3.27         Insurance..........................................................

</TABLE>

<PAGE>


                            STOCK PURCHASE AGREEMENT

            STOCK PURCHASE AGREEMENT, dated December 8, 1998 (the "Agreement"),
among priceline.com Incorporated, a Delaware corporation (the "Company"), and
the investors listed on Schedule 2.1 hereto (each a "Purchaser").

            WHEREAS, upon the terms and conditions set forth in this Agreement,
the Company proposes to issue and sell to the Purchasers, for an aggregate
purchase price of $55,350,000 (subject to adjustment as more specifically
provided herein), an aggregate of 13,837,500 shares of Series B Convertible
Preferred Stock, par value $0.01 per share, of the Company (the "Series B
Preferred Stock"); and

            WHEREAS, each share of Series B Preferred Stock is convertible
(subject to adjustment) into one share of common stock, par value $.01 per
share, of the Company (the "Common Stock").

            NOW, THEREFORE, in consideration of the mutual covenants and
agreements set forth herein and for good and valuable consideration, the receipt
and adequacy of which are hereby acknowledged, the parties hereto agree as
follows:

                                    ARTICLE 1

                                   DEFINITIONS

            1.1 Definitions. As used in this Agreement, and unless the context
requires a different meaning, the following terms have the meanings indicated:

            "Affiliate" has the meaning ascribed to such term in the
Stockholders Agreement.

            "Agreement" means this Agreement, as the same may be amended,
supplemented or modified in accordance with the terms hereof.

            "Assets" has the meaning set forth in Section 3.18 of this
Agreement.

            "Balance Sheets" has the meaning set forth in Section 3.11 of this
Agreement.

            "Board of Directors" means the Board of Directors of the Company.

<PAGE>


            "Business Day" means any day other than a Saturday, Sunday or other
day on which commercial banks in the State of New York are authorized or
required by law or executive order to close.

            "By-laws" means the by-laws of the Company in effect on the Closing
Date substantially in the form attached hereto as Exhibit A-2, as the same may
be amended from time to time.

            "Capital Lease Obligations" of any Person shall mean, as of the date
of determination, the obligations of such Person to pay rent or other amounts
under any lease (or other arrangement conveying the right to use) of real or
personal property, or a combination thereof, which obligations are required to
be classified and accounted for as capital leases on a balance sheet of such
Person under GAAP and, for the purposes of this Agreement, the amount of such
obligations at any time shall be the capitalized amount thereof at such time
determined in accordance with GAAP consistently applied.

            "Certificate of Designations" means the Certificate of Designations
with respect to the Series B Preferred Stock adopted by the Board of Directors
and filed with the Secretary of State of the State of Delaware on or before the
Closing Date substantially in the form attached hereto as Exhibit B.

            "Certificate of Incorporation" means the Certificate of
Incorporation of the Company substantially in the form attached hereto as
Exhibit A-1, as the same may be amended from time to time.

            "Claims" has the meaning set forth in Section 3.5 of this Agreement.

            "Closing" has the meaning set forth in Section 2.3 of this
Agreement.

            "Closing Date" has the meaning set forth in Section 2.3 of this
Agreement.

            "Code" means the Internal Revenue Code of 1986, as amended, or any
successor statute thereto.

            "Commission" means the Securities and Exchange Commission or any
similar agency then having jurisdiction to enforce the Securities Act.

            "Common Stock" has the meaning set forth in the recitals to this
Agreement.

            "Company" has the meaning set forth in the recitals to this
Agreement.

                                       2
<PAGE>


            "Company Indemnified Party" has the meaning set forth in Section 7.1
of this Agreement.

            "Company Indemnifying Party" has the meaning set forth in Section
7.1 of this Agreement.

            "Condition of the Company" means the assets, business, properties,
operations or financial condition of the Company.

            "Contingent Obligation" means, as applied to any Person, any direct
or indirect liability of that Person with respect to any Indebtedness, lease,
dividend, guaranty, letter of credit or other obligation, contractual or
otherwise (the "primary obligation") of another Person (the "primary obligor"),
whether or not contingent, (a) to purchase, repurchase or otherwise acquire such
primary obligations or any property constituting direct or indirect security
therefor, or (b) to advance or provide funds (i) for the payment or discharge of
any such primary obligation, or (ii) to maintain working capital or equity
capital of the primary obligor or otherwise to maintain the net worth or
solvency or any balance sheet item, level of income or financial condition of
the primary obligor, or (c) to purchase property, securities or services
primarily for the purpose of assuring the owner of any such primary obligation
of the ability of the primary obligor to make payment of such primary
obligation, or (d) otherwise to assure or hold harmless the owner of any such
primary obligation against loss or failure or inability to perform in respect
thereof. The amount of any Contingent Obligation shall be deemed to be an amount
equal to the stated or determinable amount of the primary obligation in respect
of which such Contingent Obligation is made or, if not stated or determinable,
the maximum reasonably anticipated liability in respect thereof.

            "Contractual Obligations" means as to any Person, any provision of
any security issued by such Person or of any agreement, undertaking, contract,
indenture, mortgage, deed of trust or other instrument to which such Person is a
party or by which it or any of its property is bound.

            "Conversion Price" has the meaning ascribed to such term in the
Certificate of Designations.

            "Copyrights" means any foreign or United States copyright
registrations and applications for registration thereof, and any non-registered
copyrights.

            "Defined Benefit Plan" means a defined benefit plan within the
meaning of Section 3(35) of ERISA or Section 414(j) of the Code, whether funded
or unfunded, quali fied or nonqualified (whether or not subject to ERISA or the
Code).

                                       3
<PAGE>


            "Environmental Laws" means federal, state, local and foreign laws,
principles of common law, civil law, regulations and codes, as well as orders,
decrees, judgments or injunctions issued, promulgated, approved or entered
thereunder relating to pollution or protection of the environment.

            "ERISA" means the Employee Retirement Income Security Act of 1974,
as amended.

            "ERISA Affiliate" means any Person that is treated as a single
employer with the Company under Section 414(b), (c), (m) or (o) of the Code.

            "Exchange Act" means the Securities Exchange Act of 1934, as
amended, and the rules and regulations of the Commission thereunder.

            "Financial Statements" has the meaning set forth in Section 3.11 of
this Agreement.

            "GAAP" means generally accepted accounting principles in effect from
time to time in the United States.

            "Governmental Authority" means the government of any nation, state,
city, locality or other political subdivision thereof, any entity exercising
executive, legislative, judicial, regulatory or administrative functions of or
pertaining to government, and any corporation or other entity owned or
controlled, through stock or capital ownership or otherwise, by any of the
foregoing.

            "Indebtedness" means, as to any Person, (a) all obligations of such
Person for borrowed money (including, without limitation, reimbursement and all
other obligations with respect to surety bonds, letters of credit and bankers'
acceptances, whether or not matured), (b) all obligations of such Person
evidenced by notes, bonds, debentures or similar instruments, (c) all
obligations of such Person to pay the deferred purchase price of property or
services, except trade accounts payable and accrued commercial or trade
liabilities arising in the ordinary course of business, (d) all interest rate
and currency swaps, caps, collars and similar agreements or hedging devices
under which payments are obligated to be made by such Person, whether
periodically or upon the happening of a contingency, (e) all indebtedness
created or arising under any conditional sale or other title retention agreement
with respect to property acquired by such Person (even though the rights and
remedies of the seller or lender under such agreement in the event of default
are limited to repossession or sale of such property), (f) all obligations of
such Person under leases which have been or should be, in accordance with GAAP,
recorded as capital leases, (g) all indebtedness secured by any Lien (other than
Liens in favor of lessors under leases other than leases included in 

                                       4
<PAGE>


clause (f)) on any property or asset owned or held by that Person regardless of
whether the indebtedness secured thereby shall have been assumed by that Person
or is non-recourse to the credit of that Person, and (h) any Contingent
Obligation of such Person.

            "Indemnified Party" has the meaning set forth in Section 7.4 of this
Agreement.

            "Indemnifying Party" has the meaning set forth in Section 7.4 of
this Agreement.

            "Initial Public Offering" means the first underwritten public
offering of the Common Stock pursuant to an effective Registration Statement
filed under the Securities Act with a per share purchase price equal to or
greater than the Conversion Price (as defined in the Certificate of
Designations) then in effect and resulting in aggregate net proceeds (after
expenses and underwriting commissions and discounts) to the Company and any
selling stockholder of at least $50,000,000.

            "Intellectual Property" has the meaning set forth in Section 3.20 of
this Agreement.

            "Internet Assets" means any internet domain names and other computer
user identifiers and any rights in and to sites on the worldwide web, including
rights in and to any text, graphics, audio and video files and html or other
code incorporated in such sites.

            "Liabilities" has the meaning set forth in Section 3.19 of this
Agreement.

            "Lien" means any mortgage, deed of trust, pledge, hypothecation,
assignment, encumbrance, lien (statutory or other) or preference, priority,
right or other security interest or preferential arrangement of any kind or
nature whatsoever (excluding Series B Preferred Stock and equity related
preferences), including, without limitation, those created by, arising under or
evidenced by any conditional sale or other title retention agreement, the
interest of a lessor under a Capital Lease Obligation, or any financing lease
having substantially the same economic effect as any of the foregoing.

            "Losses" has the meaning set forth in Section 7.1 of this Agreement.

            "Orders" has the meaning set forth in Section 3.2 of this Agreement.

            "Patents" means any foreign or United States patents and patent
applications, including any divisions, continuations, continuations-in-part,
substitutions 

                                       5
<PAGE>

or reissues thereof, whether or not patents are issued on such applications and
whether or not such applications are modified, withdrawn or resubmitted.

            "Permits" has the meaning set forth in Section 3.6(b)(i) of this
Agreement.

            "Permitted Liens" means (i) mechanics', carriers', workmen's,
repairmen's or other like Liens arising or incurred in the ordinary course of
business with respect to liabilities that are not yet due or delinquent, (ii)
Liens for Taxes, assessments and other governmental charges which are not due
and payable or which may hereafter be paid without penalty or which are being
contested in good faith by appropriate proceedings and (iii) other imperfections
of title or encumbrances, if any, which imperfections of title or other
encumbrances, individually or in the aggregate, would not reasonably be expected
to impair the ability of the Company to use the property or asset to which it
relates in substantially the same manner as it was used on the Closing Date.

            "Person" means any individual, firm, corporation, partnership,
trust, incorporated or unincorporated association, joint venture, joint stock
company, limited liability company, Governmental Authority or other entity of
any kind, and shall include any successor (by merger or otherwise) of such
entity.

            "PISA" has the meaning set forth in Section 3.31 of this Agreement.

            "Plans" has the meaning set forth in Section 3.17 of this Agreement.

            "Priceline LLC" means priceline.com LLC, a Delaware limited
liability company.

            "PriceLine Travel" means PriceLine Travel, Inc., a Delaware
corporation.

            "PriceLine Travel Option" has the meaning set forth in Section
5.10(c) of this Agreement.

            "Purchase Price" has the meaning set forth in Section 2.1 of this
Agreement.

            "Purchased Shares" has the meaning set forth in Section 2.1 of this
Agreement.

            "Purchaser" has the meaning set forth in the recitals to this
Agreement.

                                       6
<PAGE>

            "Purchaser Indemnified Party" has the meaning set forth in Section
7.2 of this Agreement.

            "Purchaser Indemnifying Party" has the meaning set forth in Section
7.2 of this Agreement.

            "Registration Rights Agreement" means the Amended and Restated
Registration Rights Agreement substantially in the form attached hereto as
Exhibit C.

            "Registration Statement" means a registration statement filed
pursuant to the Securities Act.

            "Requirements of Law" means, as to any Person, any law, statute,
treaty, rule, regulation, right, privilege, qualification, license or franchise
or determination of an arbitrator or a court or other Governmental Authority or
stock exchange, in each case applicable or binding upon such Person or any of
its property or to which such Person or any of its property is subject or
pertaining to any or all of the transactions contemplated or referred to herein.

            "Securities Act" means the Securities Act of 1933, as amended, and
the rules and regulations of the Commission thereunder.

            "Series A Preferred Stock" means the Series A Convertible Preferred
Stock, par value $.01 per share, of the Company.

            "Series B Preferred Stock" has the meaning set forth in the recitals
to this Agreement.

            "Side Agreement" has the meaning set forth in Section 5.10 of this
Agreement.

            "Side Parties" has the meaning set forth in Section 5.10 of this
Agreement.

            "Software" means any computer software program, source code, object
code, data and documentation, including, without limitation, any computer
software programs that incorporate and run the Company's pricing models,
formulae and algorithms.

            "Statements of Operations" has the meaning set forth in Section 3.11
of this Agreement.

                                       7
<PAGE>


            "Stock Equivalents" means any security or obligation which is by its
terms convertible into or exchangeable for shares of common stock or other
capital stock or securities of the Company, and any option, warrant or other
subscription or purchase right with respect to common stock or such other
capital stock or securities.

            "Stockholders" means Jay Walker and certain other stockholders of
the Company, including General Atlantic Partners 48, L.P. and GAP Coinvestment
Partners, L.P.

            "Stockholders Agreement" means the Amended and Restated Stockholders
Agreement, substantially in the form attached hereto as Exhibit D.

            "Subsidiary" of any Person means any limited liability company,
corporation, partnership, association, joint venture or other entity of which
such Person (either alone or through any other Person pursuant to any agreement,
arrangement, contract or other commitment) owns, directly or indirectly, 50% or
more of the capital stock or other equity interests the holders of which are
generally entitled to vote for the election of the board of directors or other
governing body of such entity.

            "Subsidiary Date" has the meaning set forth in Section 5.10(a) of
this Agreement.

            "Taxes" has the meaning set forth in Section 3.12 of this Agreement.

            "Trade Secrets" means any trade secrets, research records,
processes, procedures, manufacturing formulae, technical know-how, technology,
blue prints, designs, plans, inventions (whether patentable and whether reduced
to practice), invention disclosures and improvements thereto.

            "Trademarks" means any foreign or United States trademarks, service
marks, trade dress, trade names, brand names, designs and logos, corporate
names, product or service identifiers, whether registered or unregistered, and
all registrations and applications for registration thereof.

            "Transaction Documents" means collectively, this Agreement, the
Stockholders Agreement and the Registration Rights Agreement.

            "WAMP" means Walker Asset Management Limited Partnership, a
Connecticut limited partnership.

            "WDC" means Walker Digital Corporation, a Delaware corporation.

                                       8
<PAGE>

            1.2 Accounting Terms; Financial Statements. All accounting terms
used herein not expressly defined in this Agreement shall have the respective
meanings given to them in accordance with sound accounting practice. The term
"sound accounting practice" shall mean such accounting practice as, in the
opinion of the independent certified public accountants regularly retained by
the Company, conforms at the time to GAAP applied on a consistent basis except
for changes with which such accountants concur.

            1.3 Knowledge of the Company. All references to the knowledge of the
Company shall mean the knowledge of Richard Braddock, Chairman and Chief
Executive Officer of the Company, Jay Walker, Vice Chairman of the Company,
Jesse Fink, Chief Operating Officer of the Company, Paul E. Francis, Chief
Financial Officer of the Company, and Timothy Brier, Executive Vice President of
the Company.

                                    ARTICLE 2

                  PURCHASE AND SALE OF SERIES B PREFERRED STOCK

            2.1 Purchase and Sale of Series B Preferred Stock to the Purchaser.
Subject to the terms and conditions herein set forth, the Company agrees to
issue and sell to each of the Purchasers, and each of the Purchasers agrees that
it will purchase from the Company, on the Closing Date, the aggregate number of
shares of Series B Preferred Stock set forth opposite such Purchaser's name on
Schedule 2.1 hereto for the purchase price of $4.00 per share, or the aggregate
purchase price set forth opposite such Purchaser's name on Schedule 2.1 hereto
(the "Purchase Price"), subject to the terms of Section 2.4 below (all of the
shares of Series B Preferred Stock being purchased by the Purchasers are
collectively referred to herein as the "Purchased Shares").

            2.2 Certificate of Designations. The Purchased Shares shall have the
preferences and rights set forth in the Certificate of Designations.

            2.3 Closing. The closing of the sale and purchase of the Purchased
Shares (the "Closing") shall take place via facsimile no later than 2:00 p.m.,
New York time, on the date hereof, or at such other time, place and date that
the Company and the Purchasers may agree in writing (the "Closing Date"). At the
Closing, each of the Purchasers shall deliver to the Company by wire transfer of
immediately available funds an amount equal to such Purchaser's Purchase Price.
Upon receipt of such wire transfer, the Company shall promptly deliver to each
of the Purchasers by overnight delivery a stock certificate representing such
Purchaser's Purchased Shares.

                                       9
<PAGE>


            2.4 Conversion Price Adjustment. If the Company has not consummated
the Initial Public Offering on or prior to the first anniversary of the Closing
Date, then, pursuant to the terms of the Certificate of Designations, the
Conversion Price shall be adjusted in a manner that will result in an adjusted
purchase price of $2.46 per share of Common Stock issuable upon the conversion
of each share of Series B Preferred Stock (subject to such other adjustments, if
any, as may be provided by the Certificate of Designations) purchased by the
Purchaser pursuant to this Agreement.

                                    ARTICLE 3

                  REPRESENTATIONS AND WARRANTIES OF THE COMPANY

            The Company represents and warrants to each of the Purchasers as of
the date hereof as follows:

            3.1 Corporate Existence and Power. The Company (a) is a corporation
duly organized, validly existing and in good standing under the laws of the
jurisdiction of its incorporation; (b) has all requisite corporate power and
authority to own and operate its property, to lease the property it operates as
lessee and to conduct the business in which it is currently, or is proposed to
be, engaged; (c) is duly qualified as a foreign corporation, licensed and in
good standing under the laws of each jurisdiction in which its ownership, lease
or operation of property or the conduct of its business requires such
qualification, except to the extent that the failure to do so would not have a
material adverse effect on the Condition of the Company; and (d) has the
corporate power and authority to execute, deliver and perform its obligations
under this Agreement and each of the other Transaction Documents to which it is
a party. The Company has not received notice from any jurisdiction, other than
those referred to in clause (c) above, in writing or otherwise, that the Company
is required to qualify as a foreign corporation therein, and the Company does
not file any franchise, income or other tax returns in any other jurisdiction
based upon its ownership or use of property therein or its derivation of income
therefrom. The Company does not own or lease property in any jurisdiction other
than its jurisdiction of incorporation and the jurisdictions referred to in
clause (c) above.

            3.2 Authorization; No Contravention. The execution, delivery and
performance by the Company of this Agreement and each of the other Transaction
Documents and the transactions contemplated hereby and thereby (a) have been
duly authorized by all necessary corporate or other comparable action of the
Company; (b) do not contravene the terms of the Certificate of Incorporation or
the By-laws; (c) do not violate (and will not violate with or without the
passage of time or the giving of notice), 

                                       10
<PAGE>

conflict with or result in any breach or contravention of, or the creation of
any Lien under, any material Contractual Obligation of the Company, or any
material Requirement of Law applicable to the Company; and (d) do not violate
any judgment, injunction, writ, award, decree or order of any nature
(collectively, "Orders") of any Governmental Authority against, or binding upon,
the Company.

            3.3 Governmental Authorization; Third-Party Consents. Except as set
forth in Schedule 3.3, no approval, consent, compliance, exemption,
authorization or other action by, or notice to, or filing with, any Governmental
Authority or any other Person, and no lapse of a waiting period under a
Requirement of Law, is necessary or required in connection with the execution,
delivery or performance (including, without limitation, the sale, issuance and
delivery of the Purchased Shares) by, or enforcement against, the Company of
this Agreement and the other Transaction Documents or the transactions
contemplated hereby and thereby.

            3.4 Binding Effect. This Agreement and each of the other Transaction
Documents have been duly executed and delivered by the Company, and constitute
the valid and binding obligations of the Company enforceable against the Company
in accordance with their terms, except as enforceability may be limited by
applicable bank ruptcy, insolvency, reorganization, fraudulent conveyance or
transfer, moratorium or similar laws affecting the enforcement of creditors'
rights generally and by general prin ciples of equity relating to enforceability
(regardless of whether considered in a proceeding at law or in equity).

            3.5 Litigation. Except as set forth on Schedule 3.5, there are no
actions, suits, proceedings, claims, complaints, disputes, arbitrations or
investigations (collectively, "Claims") pending or, to the knowledge of the
Company, threatened, at law, in equity, in arbitration or before any
Governmental Authority against the Company. No Order has been issued by any
court or other Governmental Authority against the Company purporting to enjoin
or restrain the execution, delivery or performance of this Agreement or any of
the other Transaction Documents.

            3.6 Compliance with Laws.

                  (a) The Company is in compliance with all Requirements of Law
including, without limitation, any general consumer protection statutes and any
state travel agent registration requirements, and all Orders issued by any court
or Governmental Authority against the Company that are not expressly covered by
any other representation or warranty of the Company set forth in Article 3
hereof in all respects, except to the extent that the failure to comply with
such Requirements of Law or Orders would not have a material adverse effect on
the Condition of the Company.

                                       11
<PAGE>

                  (b) (i) The Company has all material licenses, permits and
approvals of any Governmental Authority (collectively, "Permits") that are
necessary for the conduct of the business of the Company; (ii) such Permits are
in full force and effect; and (iii) no violations are or have been recorded in
respect of any Permit.

                  (c) No material expenditure is presently required by the
Company to comply with any existing Requirement of Law or Order.

            3.7 Capitalization.

                  (a) On the Closing Date, after giving effect to the
transactions contemplated by this Agreement, the authorized capital stock of the
Company shall consist of (i) 300,000,000 shares of Common Stock, of which
73,793,954 shares are issued and outstanding, and (ii) 150,000,000 shares of
preferred stock, par value $.01 per share, of the Company, of which 17,288,684
shares of Series A Preferred Stock are issued and outstanding and an aggregate
of 13,837,500 shares of Series B Preferred Stock are being issued to the
Purchasers pursuant to this Agreement. Schedule 3.7(a) sets forth, as of the
Closing Date, a true and complete list of (x) the stockholders of the Company
(including any trust or escrow agent arrangement created in connection with any
employee stock option plan) and, opposite the name of each stockholder, the
amount of all outstanding capital stock and Stock Equivalents owned by such
stockholder and (y) the holders of Stock Equivalents (other than the
stockholders set forth in clause (x) above) and, opposite the name of each such
holder, the amount of all Stock Equivalents owned by such holder. As of the date
of this Agreement, (i) options to purchase a total of 17,100,000 shares of
Common Stock have been granted, or are reserved for grant under the Company's
existing stock option plan, and (ii) warrants to purchase a total of 15,264,083
shares of Common Stock are issued and outstanding. The Company has reserved an
aggregate of 17,288,684 shares of Common Stock for issuance upon conversion of
the Series A Preferred Stock and 13,837,500 shares of Common Stock for issuance
upon the conversion of the Series B Preferred Stock. Except as set forth on
Schedule 3.7(a), there are no options, warrants, conversion privileges,
subscription or purchase rights or other rights presently outstanding to
purchase or otherwise acquire (i) any authorized but unissued, unauthorized or
treasury shares of the Company's capital stock, (ii) any Stock Equivalents or
(iii) other securities of the Company. The Purchased Shares are duly authorized,
and when issued and sold to the Purchaser after payment therefor, will be
validly issued, fully paid and non-assessable and will be free from any
restrictions on transfer imposed by the Company other than as set forth in the
Stockholders Agreement and the Registration Rights Agreement, and, subject to
the truth and accuracy of the respective Purchaser's representations and
warranties set forth in Article 4 hereof, will be issued in compliance with the
registration and qualification requirements of all applicable federal, state and
foreign securities laws or pursuant to a valid exemption therefrom. The shares
of 

                                       12
<PAGE>

Common Stock issuable upon conversion of the Purchased Shares are duly
authorized and reserved for issuance and, when issued in compliance with the
provisions of the Certificate of Incorporation and the Certificate of
Designations, will be validly issued, fully paid and nonassessable. The issued
and outstanding shares of Common Stock and Series A Preferred Stock are all duly
authorized, validly issued, fully paid and nonassessable, and were issued in
compliance with the registration and qualification requirements of all
applicable federal, state and foreign securities laws or pursuant to a valid
exemption therefrom.

                  (b) The Company does not, directly or indirectly, own and has
not made any investment in any of the capital stock of, or any other proprietary
interest in, any Person.

            3.8 No Default or Breach; Contractual Obligations. Except as set
forth on Schedule 3.8, the Company has not received written notice of any
default under, and is not in default under, any Contractual Obligation listed on
Schedule 3.8. Schedule 3.8 lists all of the Contractual Obligations to which the
Company is a party, whether written or oral, (i) which involve an amount in
excess of $25,000, (ii) which the Company has entered into with any airline or
airline reservation system or any automobile manufacturer, distributor or
dealership, or (iii) which are otherwise material to the Condition of the
Company, and identifies with an asterisk each such Contractual Obligation that
is oral. All such Contractual Obligations are valid, subsisting, in full force
and effect and binding upon the Company and, to the knowledge of the Company,
the other parties thereto, except as enforceability may be limited by applicable
bankruptcy, insolvency, reorganization, fraudulent conveyance or transfer,
moratorium or similar laws affecting the enforcement of creditors' rights
generally and by general principles of equity relating to enforceability, and
the Company has paid in full or accrued all amounts due thereunder and has
satisfied in full or provided for all of its liabilities and obligations
thereunder to the extent such payment, liabilities or obligations were due, or
required performance, as applicable, from or by the Company. To the knowledge of
the Company, no other party to any such Contractual Obligation is in default
thereunder, nor does any condition exist that with notice or lapse of time or
both would constitute a default thereunder.

            3.9 Title to Properties. The Company has good, record and marketable
title in fee simple to, or holds interests in as lessee or sublessee under
leases or subleases in full force and effect, all real property used in
connection with its business or otherwise owned or leased or subleased by it,
except for such defects in title and leasehold interests as would not,
individually or in the aggregate, have a material adverse effect on the
Condition of the Company, or a material adverse effect on the ability of the
Company to perform its obligations under this Agreement or the other Transaction
Documents.

                                       13
<PAGE>


            3.10 FIRPTA. The Company is not a "foreign person" within the
meaning of Section 1445 of the Code.

            3.11 Financial Statements. The Company has delivered to each of the
Purchasers unaudited combined balance sheets of Priceline LLC and PriceLine
Travel as of December 31, 1997 and September 30, 1998 (the "Balance Sheets"),
and the related combined income statements and statements of cash flows for the
period from July 18, 1997 (Date of Inception) to December 31, 1997 and the nine
months ended September 30, 1998 (collectively, the "Statements of Operations,"
and, together with the Balance Sheets, the "Financial Statements"). Each of (i)
the Financial Statements has been prepared in accordance with GAAP applied on a
consistent basis throughout the periods indicated; (ii) the Balance Sheets
fairly presents the financial position of the Company and PriceLine Travel as of
the date thereof; and (iii) the Statements of Operations fairly presents, in all
material respects, the results of operations and changes in stockholders' equity
and cash flows of the Company and PriceLine Travel, for the period then ended,
except for normal and recurring year-end audit adjustments and the absence of
footnote disclosure. The Financial Statements consist of all the financial
statements of the Company since its inception.

            3.12 Taxes. Except as set forth on Schedule 3.12, (a) the Company
has paid all federal, state, county, local, foreign and other taxes, including,
without limitation, income taxes, estimated taxes, excise taxes, sales taxes,
use taxes, gross receipts taxes, franchise taxes, employment and payroll related
taxes, property taxes and import duties, whether or not measured in whole or in
part by net income (hereinafter, "Taxes" or, individually, a "Tax") which have
come due and are required to be paid by it through the date hereof, and all
deficiencies or other additions to Tax, interest and penalties owed by it in
connection with any such Taxes; (b) the Company has timely filed or caused to be
filed all returns for Taxes that it is required to file on and through the date
hereof (including all applicable extensions), and all such Tax returns are
accurate and complete; (c) the Company has not received any notice of deficiency
with respect to any Tax return and, to the knowledge of the Company, no audit is
in progress with respect to any return for Taxes, no extension of time is in
force with respect to any date on which any return for Taxes was or is to be
filed and no waiver or agreement is in force for the extension of time for the
assessment or payment of any Tax; (d) all liabilities for Taxes of the Company
attributable to periods prior to or ending on the date of the Financial
Statements have been provided for on the Financial Statements in accordance with
GAAP; and (e) there are no Liens for Taxes on the assets of the Company except
for Liens for current Taxes not yet due or with respect to Taxes being disputed
in good faith by the Company.

            3.13 No Material Adverse Change; Ordinary Course of Business. Since
June 30, 1998, (a) there has not been any material adverse change nor, to the

                                       14
<PAGE>


knowledge of the Company, is any such material adverse change threatened, in the
Condition of the Company, (b) the Company has not declared, paid or made any
dividend or any distribution to its stockholders except as set forth on Schedule
3.13 and (c) the Company has not increased the compensation of any of its
officers or the rate of pay of any of its employees, except as part of regular
compensation increases in the ordinary course of business and in connection with
hiring Richard Braddock as Chairman and Chief Executive Officer of the Company.

            3.14 Investment Company. The Company is not an "investment company"
within the meaning of the Investment Company Act of 1940, as amended.

            3.15 Private Offering. No form of general solicitation or general
advertising was used by the Company or its representatives in connection with
the offer or sale of the Purchased Shares. Subject in part to the truth and
accuracy of each of the Purchasers' representations and warranties set forth in
Article 4 hereof, no registration of the Purchased Shares, pursuant to the
provisions of the Securities Act or any state securities or "blue sky" laws,
will be required by the offer, sale or issuance of the Purchased Shares. The
Company agrees that neither it, nor anyone acting on its behalf, shall offer to
sell the Purchased Shares or any other securities of the Company so as to
require the registration of the Purchased Shares pursuant to the provisions of
the Securities Act or any state securities or "blue sky" laws, unless such
Purchased Shares or other securities are so registered.

            3.16 Labor Relations. (a) The Company is not engaged in any unfair
labor practice; (b) there is (i) no grievance or arbitration proceeding arising
out of or under collective bargaining agreements pending or, to the knowledge of
the Company, threa tened against the Company, and (ii) no strike, labor dispute,
slowdown or stoppage pending or, to the knowledge of the Company, threatened
against the Company; (c) the Company is not a party to any collective bargaining
agreement; (d) there is no union repre sentation question existing with respect
to the employees of the Company; and (e) to the knowledge of the Company, no
union organizing activities are taking place at any facility of the Company.

            3.17 Employee Benefit Plans. Neither the Company nor any of its
ERISA Affiliates has any actual or contingent, direct or indirect, liability in
respect of any employee benefit plan or arrangement, including any plan subject
to ERISA, other than to make contributions under or pay benefits pursuant to the
plans listed on Schedule 3.17 (collectively, the "Plans"). All of the Plans are
in material compliance with all applicable Requirements of Law. Except as set
forth on Schedule 3.17, no Plan (a) is subject to Title IV of ERISA, or is
otherwise a Defined Benefit Plan, or is a multiple employer plan (within the
meaning of Section 413(c) of the Code); or (b) provides for post-retirement
welfare benefits or a "parachute payment" (within the 

                                       15
<PAGE>


meaning of Section 280G(b) of the Code). The execution and delivery of this
Agreement and each of the other Transaction Documents, the purchase and sale of
the Purchased Shares and the consummation of the transactions contemplated
hereby and thereby will not result in any prohibited transaction within the
meaning of Section 406 of ERISA or Section 4975 of the Code.

            3.18 Title to Assets. Except as set forth on Schedule 3.18, the
Company owns and has good, valid, and marketable title to all of its properties
and assets used in its business and reflected as owned on the Financial
Statements or so described in Schedule 3.18 (collectively, the "Assets"), in
each case free and clear of all Liens other than Permitted Liens and Liens
specifically described on the notes to the Financial Statements.

            3.19 Liabilities. The Company does not have any direct or indirect
obligation or liability (the "Liabilities") other than (a) Liabilities fully and
adequately reflected or reserved against on the Financial Statements and (b)
Liabilities incurred since July 1, 1998 in the ordinary course of business.

            3.20 Intellectual Property.

                  (a) (i) The Company is the owner of, or has the license or
right to use, sell and license, all of the Copyrights, Patents, Trade Secrets,
Trademarks, Internet Assets, Software and other proprietary rights
(collectively, "Intellectual Property") that are used in connection with its
business as presently conducted or contemplated in the Company's confidential
Information Summary dated October 1998.

                        (ii) Schedule 3.20(a)(ii) sets forth all of the
Intellectual Property owned by the Company, and filings and applications for any
of the above filed by the Company or WAMP. Except as set forth on Schedule
3.20(a)(ii), none of the Intellectual Property listed on Schedule 3.20(a)(ii) is
subject to any outstanding Order, and no action, suit, proceeding, hearing,
investigation, charge, complaint, claim or demand is pending or, to the
knowledge of the Company, threatened, which challenges the validity,
enforceability, use or ownership of any item of the Intellectual Property.

                        (iii) Schedule 3.20(a)(iii) sets forth all Intellectual
Property licenses, sublicenses, distributor agreements and other agreements
under which the Company is either a licensor, licensee or distributor, except
such licenses, sublicenses and other agreements relating to off-the-shelf
software which are commercially available on a retail basis and used solely on
the computers of the Company. The Company has substantially performed all
obligations imposed upon it thereunder, and the Company is not, and to the
knowledge of the Company no other party thereto is, in breach of or default
thereunder in any respect, nor is there any event 

                                       16
<PAGE>


which with notice or lapse of time or both would constitute a default
thereunder. All of the Intellectual Property licenses listed on Schedule
3.20(a)(iii) are valid, enforceable and in full force and effect against the
Company and, to the knowledge of the Company, against the other parties to such
licenses, and will continue to be so on identical terms immediately following
the Closing except as enforceability may be limited by applicable bankruptcy,
insolvency, reorganization, fraudulent conveyance or transfer, moratorium or
similar laws affecting the enforcement of creditors' rights generally and by
general principles of equity relating to enforceability.

                        (iv) To the knowledge of the Company, other than as set
forth on Schedule 3.20(a)(iv), none of the Intellectual Property currently sold
or licensed by the Company to any Person or used by or licensed to the Company
infringes upon or otherwise violates any Intellectual Property rights of others.

                        (v) Except as set forth on Schedule 3.20(a)(v), no 
litigation is pending and no Claim has been received by the Company or, to the
knowledge of the Company, is threatened, contesting the right of the Company to
sell or license to any Person or use the Intellectual Property presently sold or
licensed to such Person or used by the Company.

                  (b) Except as set forth on Schedule 3.20(b), to the knowledge
of the Company, no Person is infringing upon or otherwise violating the
Intellectual Property rights of the Company.

                  (c) No former employer of any employee of the Company, and no
current or former client of any consultant of the Company, has made a claim
against the Company or, to the knowledge of the Company, against any former
employer of such employee or consultant, that such employee or such consultant
is utilizing for the benefit of the Company Intellectual Property of such former
employer or client.

                  (d) Except as set forth on Schedule 3.20(d), the Company is
not a party to or bound by, any license or other agreement requiring the payment
of any material royalty payment, excluding such agreements relating to software
licensed for use solely on the computers of the Company.

                  (e) To the knowledge of the Company, no employee of the
Company is in violation in any material respect of any Requirement of Law
applicable to such employee, or any term of any employment agreement, patent or
invention disclosure agreement or other contract or agreement relating to the
relationship of such employee with the Company.

                                       17
<PAGE>


                  (f) To the knowledge of the Company, none of the Trade
Secrets, wherever located, the value of which is contingent upon maintenance of
confiden tiality thereof, has been disclosed to any Person not a party to a
non-disclosure or confidentiality agreement with the Company other than
employees, representatives and agents of the Company, except as required
pursuant to the filing of a patent application by the Company.

                  (g) It is not necessary for the Company's business to use any
Intellectual Property owned by any director, officer, employee or consultant of
the Company (or persons the Company presently intends to hire). At no time
during the conception or reduction to practice of any of the Company's
Intellectual Property was any developer, inventor or other contributor to such
Intellectual Property operating under any grants from any Governmental Authority
or subject to any employment agreement, invention assignment, nondisclosure
agreement or other Contractual Obligation with any third party that could
adversely affect the Company's rights to its Intellectual Property.

            3.21 Year 2000 Compliance. To the knowledge of the Company, the
proprietary Software used by the Company will, and no material expenditure is
required by the Company to make such Software, (a) accurately process date
information before, during and after January 1, 2000, including, but not limited
to, accepting date input, providing date output and performing calculations on
dates or portions of dates; (b) function accurately and without interruption
before, during and after January 1, 2000 without any change in operations
associated with the advent of the new century; (c) respond to two (2) digit year
date input in a way that resolves the ambiguity as to century in a disclosed,
defined and predetermined manner; and (d) store and provide output of date
information in ways that are unambiguous as to century.

            3.22 Network Redundancy and Computer Back-Up. Except as set forth on
Schedule 3.22:

                  (a) The server hardware and supporting equipment (including
communications equipment, terminals and hook-ups that interface with airline
computer reservation systems) used in the Company's services network provide
redundancy and meet industry standards relating to high availability; and

                  (b) The Company has made back-ups of all material computer
Software and databases utilized by it and maintain such Software and databases
at a secure off-site location.

            3.23 Privacy of Customer Information. The Company does not use any
of the customer information it receives through its website in an unlawful
manner or in a 

                                       18
<PAGE>


manner violative of the rights of privacy of its customers. The Company has
reasonably adequate security measures in place to protect the customer
information it receives through its website from illegal use by third parties or
use by third parties in a manner violative of the rights of privacy of its
customers. The Company represents to its customers that it keeps secure the
customer information its receives through its website, but does not guarantee
security.

            3.24 Potential Conflicts of Interest. Except as set forth on
Schedule 3.24, no officer, director or stockholder of the Company, no spouse of
any such officer, director or stockholder, and, to the knowledge of the Company,
no relative of such spouse or of any such officer, director or stockholder and
no Affiliate of any of the foregoing (a) owns, directly or indirectly, any
interest in (excepting less than 1% stock holdings for investment purposes in
securities of publicly held and traded companies), or is an officer, director,
employee or consultant of, any Person which is, or is engaged in business as, a
competitor, lessor, lessee, supplier, distributor, sales agent or customer of,
or lender to or borrower from, the Company; (b) owns, directly or indirectly, in
whole or in part, any tangible or intangible property that the Company has used,
or that the Company will use, in the conduct of business; or (c) has any cause
of action or other claim whatsoever against, or owes or has advanced any amount
to, the Company, except for claims in the ordinary course of business such as
for accrued vacation pay, accrued benefits under employee benefit plans, and
similar matters and agreements existing on the date hereof.

            3.25 Trade Relations. There exists no actual or, to the knowledge of
the Company, threatened termination, cancellation or limitation of, or any
adverse modifi cation or change in, the business relationship of the Company, or
the business of the Company, with any customer or supplier or any group of
customers or suppliers including, without limitation, Delta Airlines, Northwest
Airlines, Transworld Airlines or America West Airlines, whose purchases or
inventories provided to the Company's business are individually or in the
aggregate material to the Condition of the Company, and there exists no present
condition or state of fact or circumstances that would materially adversely
affect the Condition of the Company or materially prevent the Company from
conducting such business relationships or such business with any such customer,
supplier or group of customers or suppliers in substantially the same manner as
heretofore conducted by the Company.

            3.26 Outstanding Borrowing. Schedule 3.26 sets forth (a) the amount
of all Indebtedness of the Company as of the date hereof, (b) the Liens that
relate to such Indebtedness and that encumber the Assets and (c) the name of
each lender thereof.

            3.27 Insurance. Schedule 3.27 lists all of the insurance policies
held by or on behalf of the Company, with the effective date and coverage
amounts indicated 

                                       19
<PAGE>


thereon. Such policies and binders are valid and enforceable in accordance with
their terms and are in full force and effect and covers all risks associated
with the Company's business that are customarily insured against in the industry
in such amounts as are customary in the industry. None of such policies will be
affected by, or terminate or lapse by reason of, any transaction contemplated by
this Agreement or any of the other Transaction Documents.

            3.28 Environmental Matters. The Company is in compliance in all
material respects with all applicable Environmental Laws. There is no civil,
criminal or administrative judgment, action, suit, demand, claim, hearing,
notice of violation, investigation, proceeding, notice or demand letter pending
or, to the knowledge of the Company, threatened against the Company pursuant to
Environmental Laws which would reasonably be expected to result in a fine,
penalty or other obligation, cost or expense that would have a material adverse
affect on the Condition of the Company; and, to the knowledge of the Company,
there are no past or present events, conditions, circumstances, activities,
practices, incidents, agreements, actions or plans of or relating to the Company
which may prevent compliance with, or which have given rise to or will give rise
to liability under, Environmental Laws that would have a material adverse affect
on the Condition of the Company.

            3.29 Broker's, Finder's or Similar Fees. There are no brokerage
commissions, finder's fees or similar fees or commissions payable by the Company
in connection with the transactions contemplated hereby based on any agreement,
arrangement or understanding with the Company or any action taken by any such
Person.

            3.30 WAMP Assets. WAMP owns no assets used by, or necessary for the
conduct of business of, the Company.

            3.31 Affiliate Payments. All payments made by the Company to WDC
pursuant to the Purchase and Intercompany Services Agreement (the "PISA"), dated
as of April 6, 1998, among WAMP, WDC, the Company and PriceLine Travel, for
services provided by WDC are made on the same basis as if the Company were
paying an unaffiliated third party for similar services pursuant to an
arm's-length transaction.

            3.32 Employees. The Company employs, or contracts with consultants
for, all personnel necessary for the operation of its business.

            3.33 Financial Projections. The financial projections provided to
the Purchasers by the Company regarding airline ticket sales were reasonably
prepared based upon the best available information and the Company's financial
statements.

                                       20
<PAGE>


            3.34 Disclosure; Material Adverse Effects. There is no fact known to
the Company, which the Company has not disclosed to each Purchaser either orally
or in writing, which materially adversely affects the Condition of the Company
or the ability of the Company to perform its obligations under this Agreement,
any of the other Transaction Documents or any document contemplated hereby or
thereby.

            3.35 Certain Events. To the best of the Company's knowledge and
except as set forth on Schedule 3.35, since June 30, 1998 there has not been:

                  (a) any damage, destruction or loss, whether or not covered by
insurance, materially and adversely affecting the Condition of the Company (as
such business is presently conducted and as it is presently proposed to be
conducted);

                  (b) any waiver or compromise by the Company of a material debt
owed to it;

                  (c) any satisfaction or discharge of any Lien by the Company,
except in the ordinary course of business and that is not material to the
Condition of the Company (as such business is presently conducted and as it is
presently proposed to be conducted);

                  (d) any sale, assignment, or transfer of any patents,
trademarks, copyrights, trade secrets, or other intangible assets;

                  (e) any resignation or termination of employment of any
executive officer of the Company that would materially and adversely affect the
Condition of the Company and the Company, to the best of its knowledge, does not
know of the impending resignation or termination of employment of any such
officer that would materially and adversely affect the Condition of the Company;

                  (f) receipt of written notice that there has been a loss of,
or material order cancellation by, any major customer of the Company;

                  (g) any loans or guarantees made by the Company to or for the
benefit of its employees, stockholders, officers, or directors, or any members
of their immediate families, other than travel advances and other advances made
in the ordinary course of its business; or

                  (h) any agreement or commitment by the Company to do any of
the things described in this Section 3.35.

                                       21
<PAGE>


                                    ARTICLE 4

                         REPRESENTATIONS AND WARRANTIES
                                OF THE PURCHASER

            Each of the Purchasers hereby represents and warrants (severally as
to itself and not jointly) to the Company as follows:

            4.1 Existence and Power. Such Purchaser (a), if not an individual,
is duly organized and validly existing under the laws of the jurisdiction of its
formation and (b) has the requisite power and authority to execute, deliver and
perform its obligations under this Agreement and each of the other Transaction
Documents to which it is a party.

            4.2 Authorization; No Contravention. The execution, delivery and
performance by such Purchaser of this Agreement and each of the other
Transaction Documents to which it is a party and the transactions contemplated
hereby and thereby, including, without limitation, the purchase of the Purchased
Shares, (a) have been duly authorized by all necessary action, (b) do not
contravene the terms of such Purchaser's organizational documents, or any
amendment thereof, if applicable, (c) do not violate, conflict with or result in
any breach or contravention of or the creation of any Lien under, any
Contractual Obligation of such Purchaser, or any Requirement of Law applicable
to such Purchaser and (d) do not violate any Order of any Governmental Authority
against, or binding upon, such Purchaser.

            4.3 Governmental Authorization; Third-Party Consents. No approval,
consent, compliance, exemption, authorization, or other action by, or notice to,
or filing with, any Governmental Authority or any other Person, and no lapse of
a waiting period under any Requirement of Law, is necessary or required in
connection with the execution, delivery or performance (including, without
limitation, the purchase of the Purchased Shares by such Purchaser) by, or
enforcement against, such Purchaser of this Agreement and each of the other
Transaction Documents to which such Purchaser is a party or the transactions
contemplated hereby and thereby.

            4.4 Binding Effect. This Agreement and each of the other Transaction
Documents to which such Purchaser is a party have been duly executed and
delivered by such Purchaser and constitute the valid and binding obligations of
such Purchaser, enforce able against it in accordance with its terms, except as
enforceability may be limited by applicable bankruptcy, insolvency,
reorganization, fraudulent conveyance or transfer, moratorium or similar laws
affecting the enforcement of creditors' rights 

                                       22
<PAGE>


generally or by equitable principles relating to enforceability (regardless of
whether considered in a proceeding at law or in equity).

            4.5 Purchase for Own Account. The Purchased Shares to be acquired by
such Purchaser pursuant to this Agreement, and the Common Stock acquired upon
conversion of the Series B Preferred Stock, are being or will be acquired for
its own account and with no intention of distributing or reselling such
securities or any part thereof in any transaction that would be in violation of
the securities laws of the United States of America, or any state. If such
Purchaser should in the future decide to dispose of any of such Purchased
Shares, such Purchaser understands and agrees that it may do so only in
compliance with the Securities Act and applicable state securities laws, as then
in effect. Such Purchaser agrees to the imprinting, so long as required by law,
of legends on certificates representing all of the Purchased Shares and shares
of Common Stock issuable upon conversion of the Purchased Shares to the
following effect:

      THE SECURITIES REPRESENTED BY THIS CERTIFICATE HAVE NOT BEEN REGISTERED
      UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE "ACT"), OR THE
      SECURITIES LAWS OF ANY STATE. THE SECURITIES MAY NOT BE TRANSFERRED EXCEPT
      PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT UNDER SUCH ACT AND
      APPLICABLE STATE SECURITIES LAWS OR PURSUANT TO AN APPLICABLE EXEMPTION
      FROM THE REGISTRATION REQUIREMENTS OF SUCH ACT AND SUCH LAWS.

      THE SALE, ASSIGNMENT, HYPOTHECATION, PLEDGE, ENCUMBRANCE OR OTHER
      DISPOSITION (EACH A "TRANSFER") AND VOTING OF ANY OF THE SECURITIES
      REPRESENTED BY THIS CERTIFICATE ARE RESTRICTED BY THE TERMS OF THE AMENDED
      AND RESTATED STOCKHOLDERS AGREEMENT, DATED AS OF DECEMBER 8, 1998, AMONG
      PRICELINE.COM INCORPORATED, GENERAL ATLANTIC PARTNERS 48, L.P., GAP
      COINVESTMENT PARTNERS, L.P., GENERAL ATLANTIC PARTNERS 50, L.P. AND THE
      OTHER STOCKHOLDERS NAMED THEREIN. THE COMPANY WILL NOT REGISTER THE
      TRANSFER OF SUCH SECURITIES ON THE BOOKS OF THE COMPANY UNLESS AND UNTIL
      THE TRANSFER HAS BEEN MADE IN COMPLIANCE WITH THE TERMS OF THE
      STOCKHOLDERS AGREEMENT. THE COMPANY WILL MAIL A COPY OF SUCH AGREEMENT,
      TOGETHER WITH A COPY OF THE EXPRESS TERMS OF THE SECURITIES AND THE OTHER
      CLASS OR CLASSES AND SERIES OF SHARES, IF ANY, WHICH THE COMPANY IS
      AUTHORIZED TO ISSUE, TO THE RECORD HOLDER OF THIS CERTIFICATE, 

                                       23
<PAGE>


      WITHOUT CHARGE, WITHIN FIVE DAYS AFTER RECEIPT OF A WRITTEN REQUEST
      THEREFOR.

            4.6 Restricted Securities. Such Purchaser understands that the
Purchased Shares will not be registered at the time of their issuance under the
Securities Act for the reason that the sale provided for in this Agreement is
exempt pursuant to Section 4(2) of the Securities Act and that the reliance of
the Company on such exemption is predicated in part on such Purchaser's
representations set forth herein. Such Purchaser represents that it is
experienced in evaluating companies such as the Company, has such knowledge and
experience in financial and business matters as to be capable of evaluating the
merits and risks of its investment and has the ability to suffer the total loss
of its investment. Such Purchaser further represents that it has had the
opportunity to conduct due diligence on the Company, to ask questions of and
receive answers from the Company concerning the terms and conditions of the
offering and to obtain additional information to such Purchaser's satisfaction.

            4.7 Broker's, Finder's or Similar Fees. There are no brokerage
commissions, finder's fees or similar fees or commissions payable by such
Purchaser, in connection with the transactions contemplated hereby based on any
agreement, arrangement or understanding with such Purchaser or any action taken
by such Purchaser.

            4.8 Accredited Investor. Such Purchaser is an "Accredited Investor"
within the meaning of Rule 501 of Regulation D under the Securities Act, as
presently in effect.

            4.9 Litigation. No action, suit, proceeding, claim, complaint,
dispute, arbitration or investigation has been instituted or, to the knowledge
of such Purchaser, is threatened to restrain or prohibit or otherwise challenge
the legality or validity of the transactions contemplated by this Agreement or
any of the other Transaction Documents. No Order has been issued by any court or
other Governmental Authority against such Purchaser purporting to enjoin or
restrain the execution, delivery or performance of this Agreement or any of the
other Transaction Documents.

                                    ARTICLE 5

                         CONDITIONS TO THE OBLIGATION OF
                             THE PURCHASER TO CLOSE

            The obligation of each Purchaser to purchase the number of Purchased
Shares set forth opposite such Purchaser's name on Schedule 2.1 hereto, to pay
the 

                                       24
<PAGE>

Purchase Price set forth opposite such Purchaser's name on Schedule 2.1 hereto
at the Closing and to perform any obligations hereunder shall be subject to the
satisfaction as determined by, or waiver by, such Purchaser of the following
conditions on or before the Closing Date.

            5.1 Secretary's Certificate. Such Purchaser shall have received a
certificate from the Company, in form and substance reasonably satisfactory to
such Purchaser, dated the Closing Date and signed by the Secretary or an
Assistant Secretary of the Company, certifying that the attached copies of the
Certificate of Incorporation (including the Certificate of Designations with
respect to the Series A Preferred Stock), the By-laws, the Certificate of
Designations and resolutions of the Board of Directors approving this Agreement
and each of the other Transaction Documents to which the Company is a party and
the transactions contemplated hereby and thereby, are all true, complete and
correct and remain unamended and in full force and effect.

            5.2 Filing of Certificate of Designations. The Certificate of
Designations shall have been duly filed by the Company with the Secretary of
State of the State of Delaware and the Certificate of Designations with respect
to the Series A Preferred Stock shall have been duly amended to provide for the
automatic conversion of the Series A Preferred Stock into shares of Common Stock
upon consummation of the Initial Public Offering, in each case in accordance
with the General Corporation Law of the State of Delaware.

            5.3 Stockholders Agreement. The Company and the Stockholders shall
have duly executed and delivered the Stockholders Agreement, substantially in
the form attached hereto as Exhibit D and the Company shall have taken such
actions as may be necessary to cause (i) the Purchasers set forth in items 3 and
4 of Schedule 2.1 hereto to be General Atlantic Stockholders thereunder and (ii)
all other Purchasers to be Additional Stockholders thereunder, including
approval by the Board of Directors.

            5.4 Registration Rights Agreement. The Company and the Stockholders
shall have duly executed and delivered the Registration Rights Agreement,
substantially in the form attached hereto as Exhibit C and the Company shall
have taken such actions as may be necessary to cause (i) the Purchasers set
forth on items 1 and 2 of Schedule 2.1 hereto to be Demand Stockholders
thereunder, (ii) the Purchasers set forth on items 3 and 4 of Schedule 2.1
hereto to be General Atlantic Stockholders thereunder and (iii) the Purchasers
set forth on items 5 through 10 to be Piggy-Back Stockholders thereunder,
including approval by the Board of Directors.

            5.5 Opinion of Counsel. Such Purchaser shall have received an
opinion of counsel to the Company, dated the Closing Date, relating to the
transactions 

                                       25
<PAGE>


contemplated by or referred to herein, in form and substance reasonably
satisfactory to such Purchaser.

            5.6 Purchased Shares. The Company shall be prepared to deliver to
such Purchaser certificates in definitive form representing the number of
Purchased Shares set forth opposite such Purchaser's name on Schedule 2.1
hereto, registered in the name of such Purchaser.

            5.7 No Material Judgment or Order. There shall not be on the Closing
Date any Order of a court of competent jurisdiction or any ruling of any
Governmental Authority or such condition imposed under any Requirement of Law
which would, in the judgment of such Purchaser, (a) prohibit or restrict (i) the
purchase of the Purchased Shares being purchased by such Purchaser or (ii) the
consummation of the transactions contemplated by this Agreement, (b) subject
such Purchaser to any penalty or onerous condition under or pursuant to any
Requirement of Law if the Purchased Shares being purchased by such Purchaser
were to be purchased hereunder, or (c) restrict the operation of the business of
the Company as conducted on the date hereof in a manner that would have a
material adverse effect on the Condition of the Company.

            5.8 No Litigation. No action, suit, proceeding, claim or dispute
shall have been brought or otherwise arisen at law, in equity, in arbitration or
before any Governmental Authority against the Company which would, if adversely
determined, (a) have a material adverse effect on the Condition of the Company
or (b) have a material adverse effect on the ability of the Company to perform
its obligations under this Agreement or each of the other Transaction Documents.

            5.9 Preemptive Rights. The Company shall have provided such
Purchaser with evidence reasonably satisfactory to such Purchaser's counsel that
all preemptive or other similar rights applicable to the transactions
contemplated hereby have been waived.

            5.10 Side Agreement. PriceLine Travel and Jay Walker (the "Side
Parties") shall have executed a side agreement (the "Side Agreement") pursuant
to which:

                  (a) The Side Parties shall agree to cause PriceLine Travel by
the earlier to occur of (i) December 31, 1998 and (ii) the effective date of the
Initial Public Offering (such date, the "Subsidiary Date") to either (x) become
a wholly owned Subsidiary of the Company, (y) merge or consolidate with or into
the Company; or (z) transfer all of its assets to the Company, for nominal
consideration;

                                       26
<PAGE>


                  (b) PriceLine Travel shall agree not to issue any equity
securities or securities convertible into equity securities to any Person on or
before the Subsidiary Date;

                  (c) Jay Walker shall grant a call option (the "PriceLine
Travel Option") to the Company, such option to be exercisable at any time prior
to the Subsidiary Date, to purchase all of Jay Walker's interests in PriceLine
Travel for nominal consideration; and

                  (d) Jay Walker shall agree not to transfer any of his
interests in PriceLine Travel prior to the Subsidiary Date other than in
connection with the transactions contemplated in Section 5.10(a).

                                    ARTICLE 6

                          CONDITIONS TO THE OBLIGATION
                             OF THE COMPANY TO CLOSE

            The obligation of the Company to issue and sell to each Purchaser
the Purchased Shares set forth opposite such Purchaser's name on Schedule 2.1
hereto and the obligation of the Company to perform its other obligations
hereunder with respect to each such Purchaser shall be subject to the
satisfaction as determined by, or waiver by, the Company of the following
conditions on or before the Closing Date:

            6.1 Stockholders Agreement. Such Purchaser shall have duly executed
and delivered the Stockholders Agreement substantially in the form attached
hereto as Exhibit D as an Additional Stockholder or with respect to the
Purchasers listed on items 3 and 4 of Schedule 2.1 hereto as a General Atlantic
Stockholder thereunder.

            6.2 Registration Rights Agreement. Such Purchaser shall have duly
executed and delivered the Registration Rights Agreement substantially in the
form attached hereto as Exhibit C, (i) with respect to the Purchasers listed on
items 1 and 2 of Schedule 2.1 hereto, as a Demand Stockholder thereunder, (ii)
with respect to the Purchasers listed on items 3 and 4 of Schedule 2.1 hereto,
as a General Atlantic Stockholder thereunder, or (iii) with respect to the
Purchasers listed on items 5 through 11 of Schedule 2.1 hereto, as a Piggy-Back
Stockholder thereunder.

            6.3 No Material Judgment or Order. There shall not be on the Closing
Date any Order of a court of competent jurisdiction or any ruling of any
Governmental Authority or any condition imposed under any Requirement of Law
which would, in the judgment of the Company, (a) prohibit or restrict (i) the
sale of Purchased 

                                       27
<PAGE>


Shares to such Purchaser or (ii) the consummation of the transactions
contemplated by this Agreement, or (b) subject the Company to any penalty or
onerous condition under or pursuant to any Requirement of Law if Purchased
Shares were to be sold to such Purchaser hereunder.

            6.4 Payment of Purchase Price. Such Purchaser shall have delivered
the Purchase Price opposite such Purchaser's name on Schedule 2.1 hereto.

            6.5 Qualifications. All authorizations, approvals or permits of any
Governmental Authority that are required in connection with the lawful issuance
and sale of the Series B Preferred Stock shall have been obtained and be
effective as of the Closing.

                                    ARTICLE 7

                                 INDEMNIFICATION

            7.1 Indemnification. Except as otherwise provided in this Article 7,
the Company (the "Company Indemnifying Party") agrees to indemnify, defend and
hold harmless each of the Purchasers and its Affiliates and their respective
officers, directors, agents, employees, subsidiaries, partners, members and
controlling persons (each, a "Company Indemnified Party") to the fullest extent
permitted by law from and against any and all losses, Claims (including any
Claim by a third party), damages, expenses (including reasonable fees,
disbursements and other charges of one counsel incurred by the Company
Indemnified Party in any action between the Company Indemnifying Party and the
Company Indemnified Party or between the Company Indemnified Party and any third
party or otherwise) or other liabilities (collectively, "Losses") resulting
from, arising out of or relating to any breach of any representation or
warranty, covenant or agreement by the Company in this Agreement or the other
Transaction Documents, including, without limitation, any legal, administrative
or other actions (including actions brought by the Purchaser or the Company or
any equity holders of the Company or derivative actions brought by any Person
claiming through or in the Company's name), proceedings or investigations
(whether formal or informal), or written threats thereof, based upon, relating
to or arising out of this Agreement or the other Transaction Documents, the
transactions contemplated hereby and thereby, or any Company Indemnified Party's
role therein or in transactions contemplated thereby; provided, that the Company
Indemnifying Party shall not be liable under this Section 7.1 to any Company
Indemnified Party to the extent that it is finally judicially determined that
such Losses resulted primarily from the material breach by any Company
Indemnified Party of any representation, warranty, covenant or other agreement
of a Company Indemnified Party contained in this Agreement; and provided,
further, that if 

                                       28
<PAGE>


and to the extent that such indemnification is unenforceable for any reason, the
Company Indemnifying Party shall make the maximum contribution to the payment
and satisfaction of such Losses which shall be permissible under applicable
laws. The amount of any payment by the Company to any Company Indemnified Party
herewith in respect of any Loss shall be of sufficient amount to make such
Company Indemnified Party whole, including, without limitation or duplication,
an amount sufficient to make up any diminution in the value of the Purchased
Shares held by such Company Indemnified Party resulting from the payment by the
Company of such indemnification payment. In connection with the obligation of
the Company Indemnifying Party to indemnify for expenses as set forth above, the
Company Indemnifying Party shall, upon presentation of appropriate invoices
containing reasonable detail, reimburse each Company Indemnified Party for all
such expenses (including reasonable fees, disbursements and other charges of
counsel incurred by the Company Indemnified Party in any action between the
Company Indemnifying Party and the Company Indemnified Party or between the
Company Indemnified Party and any third party or otherwise) as they are incurred
by such Company Indemnified Party; provided, however, that if a Company
Indemnified Party is reimbursed hereunder for any expenses, such reimbursement
of expenses shall be refunded to the extent it is finally judicially determined
that the Losses in question resulted primarily from the willful misconduct or
gross negligence of such Company Indemnified Party.

            7.2 Indemnification by Purchaser. Except as otherwise provided in
this Article 7, each of the Purchasers, severally and not jointly (each a
"Purchaser Indemnifying Party"), agrees to indemnify, defend and hold harmless
the Company, its officers, directors, agents, employees, subsidiaries and
controlling persons (each, a "Purchaser Indemnified Party") to the fullest
extent permitted by law from and against any and all Losses resulting from,
arising out of or relating to any breach of any representation or warranty of
such Purchaser Indemnifying Party set forth in Article 4 hereto; provided, that
such Purchaser Indemnifying Party shall not be liable under this Section 7.2 to
the Purchaser Indemnified Party to the extent that it is finally judicially
determined that such Losses resulted primarily from the material breach by such
Purchaser Indemnified Party of any representation, warranty, covenant or other
agreement of such Purchaser Indemnified Party contained in this Agreement; and
provided, further, that if and to the extent that such indemnification is
unenforceable for any reason, such Purchaser Indemnifying Party shall make the
maximum contribution to the payment and satisfaction of such Losses which shall
be permissible under applicable laws. The aggregate amount of indemnification
payments payable by any such Purchaser Indemnifying Party to the Purchaser
Indemnified Party shall not exceed the aggregate Purchase Price paid by such
Purchaser Indemnifying Party for its Purchased Shares hereunder.

                                       29
<PAGE>


            7.3 Seller's Limitation of Liability. Anything in this Agreement to
the contrary notwithstanding, the Company Indemnifying Party's maximum liability
to any Company Indemnified Parties for indemnification under Section 7.1 (except
for Losses resulting from, arising out of or relating to a breach of any of the
representations and warranties set forth in Sections 3.1, 3.2, 3.4, 3.7(a) and
3.9) shall not exceed the aggregate Purchase Price paid by such Company
Indemnified Party for its Purchased Shares hereunder (or, if such Company
Indemnified Party is not a Purchaser, the aggregate Purchase Price paid by the
Purchaser whose relationship with such Company Indemnified Party is the reason
such Company Indemnified Party is entitled to indemnification hereunder).

            7.4 Notification. Each Company Indemnified Party or Purchaser
Indemnified Party, as the case may be (for purposes of this Section 7.4, an
"Indemnified Party"), under this Article 7 shall, promptly after the receipt of
notice of the commencement of any action, investigation, claim or other
proceeding against such Indemnified Party in respect of which indemnity may be
sought from the Company Indemnifying Party or Purchaser Indemnifying Party, as
the case may be (for purposes of this Section 7.4, an "Indemnifying Party")
under this Article 7, notify the Indemnifying Party in writing of the
commencement thereof. The omission of any Indemnified Party so to notify the
Indemnifying Party of any such action shall not relieve the Indemnifying Party
from any liability which it may have to such Indemnified Party (a) other than
pursuant to this Article 7 or (b) under this Article 7 unless, and only to the
extent that, such Indemnifying Party has been prejudiced thereby. In case any
such action, claim or other proceeding shall be brought against any Indemnified
Party, and it shall notify the Indemnifying Party of the commencement thereof,
the Indemnifying Party shall be entitled to assume the defense thereof at its
own expense, with counsel satisfactory to such Indem nified Party in its
reasonable judgment; provided, however, that any Indemnified Party may, at its
own expense, retain separate counsel to participate in such defense at its own
expense. Notwithstanding the foregoing, in any action, claim or proceeding in
which both the Indemnifying Party, on the one hand, and an Indemnified Party, on
the other hand, are, or are reasonably likely to become, a party, such
Indemnified Party shall have the right to employ separate counsel at the expense
of the Indemnifying Party and to control its own defense of such action, claim
or proceeding if, in the reasonable opinion of counsel to such Indemnified
Party, a conflict or potential conflict exists between the Indemnifying Party,
on the one hand, and such Indemnified Party, on the other hand, that would make
such separate representation advisable; provided, however, that the Indemnifying
Party shall not be liable for the fees and expenses of more than one counsel to
all Indemnified Parties. The Indemnifying Party agrees that it will not, without
the prior written consent of the Purchaser, settle, compromise or consent to the
entry of any judgment in any pending or threatened claim, action or proceeding
relating to the matters contemplated hereby (if any Indemnified Party is a party
thereto or has been actually threatened to be made a 


                                       30
<PAGE>

party thereto) unless such settlement, compromise or consent includes an
unconditional release of the Purchaser and each other Indemnified Party from all
liability arising or that may arise out of such claim, action or proceeding. The
Indemnifying Party shall not be liable for any settlement of any claim, action
or proceeding effected against an Indemnified Party without the Indemnifying
Party's written consent, which consent shall not be unreasonably withheld.

            7.5 Exclusivity of Remedies. The indemnities provided in this
Article 7 shall be the exclusive remedy for breach of this Agreement by any
party hereto other than equitable remedies, including in the form of injunctions
and orders for specific performance.

                                    ARTICLE 8

                              AFFIRMATIVE COVENANTS

            Until the effective date of the Initial Public Offering, or earlier,
as applicable, the Company hereby covenants and agrees with each of the
Purchasers as follows:

            8.1 Preservation of Existence. The Company shall use its reasonable
commercial efforts to:

                  (a) preserve and maintain in full force and effect its
existence and good standing under the laws of its jurisdiction of formation or
organization;

                  (b) preserve and maintain in full force and effect all
material rights, privileges, qualifications, applications, licenses and
franchises necessary in the normal conduct of its business;

                  (c) preserve its business organization; and

                  (d) file or cause to be filed in a timely manner all reports,
applications, estimates and licenses that shall be required by a Governmental
Authority and that, if not timely filed, would be reasonably expected to have a
material adverse effect on the Condition of the Company.

            8.2 PriceLine Travel Reorganization. The Company shall cause
PriceLine Travel by the Subsidiary Date to either (a) become a wholly owned
Subsidiary of the Company, (b) merge or consolidate with or into the Company, or
(c) transfer all of its assets to the Company, for nominal consideration.

                                       31
<PAGE>


            8.3 Financial Statements and Other Information. The Company shall
deliver to each of the Purchasers, in form and substance satisfactory to the
Purchaser:

                  (a) as soon as available, but not later than ninety (90) days
after the end of each fiscal year of the Company, a copy of the audited balance
sheet of the Company as of the end of such fiscal year and the related
statements of operations and cash flows for such fiscal year, setting forth in
each case in comparative form the figures for the previous year, all in
reasonable detail and accompanied by a management summary and analysis of the
operations of the Company for such fiscal year accompanied by the report of a
nationally recognized independent certified public accounting firm, which report
shall state that such financial statements present fairly the financial
condition as of such date and results of operations and cash flows for the
periods indicated in conformity with GAAP applied on a consistent basis;

                  (b) commencing with the fiscal period ending on March 31,
1999, as soon as available, but in any event not later than forty-five (45) days
after the end of each of the first three fiscal quarters of each fiscal year,
the unaudited balance sheet of the Company, and the related statements of
operations and cash flows for such quarter and for the period commencing on the
first day of the fiscal year and ending on the last day of such quarter, all
certified by an appropriate officer of the Company as presenting fairly the
financial condition as of such date and results of operations and cash flows for
the periods indicated in conformity with GAAP applied on a consistent basis,
subject to normal year-end adjustments, the absence of a management's discussion
and analysis of financial condition section and the absence of footnotes
required by GAAP; and

                  (c) notwithstanding anything to the contrary set forth herein,
both before and after the effective date of the Initial Public Offering as
promptly as practicable, but not later than five (5) days after a request by
such Purchaser, a certificate signed by the Chief Executive Officer of the
Company that the Company is not a "foreign person" within the meaning of Section
1445 of the Code.

            8.4 Annual Budget. Not less than forty-five (45) days prior to the
end of each fiscal year, the Company shall prepare and submit to its Board of
Directors for its approval an operating budget of the Company for the next
fiscal year.

            8.5 Reservation of Common Stock. The Company shall at all times
reserve and keep available out of its authorized shares of Common Stock, solely
for the purpose of issue or delivery upon conversion of the Purchased Shares as
provided in the Certificate of Incorporation, the maximum number of shares of
Common Stock that may be issuable or deliverable upon such conversion. Such
shares of Common Stock are duly authorized and, when issued or delivered in
accordance with the Certificate of 

                                       32
<PAGE>


Incorporation and against payment therefor, shall be validly issued, fully paid
and non-assessable. The Company shall issue such shares of Common Stock in
accordance with the terms of the Certificate of Incorporation and otherwise
comply with the terms hereof and thereof.

            8.6 Insurance. The Company shall use reasonable best efforts to
maintain insurance with insurance companies or associations with a rating of "A"
or better as established by Best's Rating Guide (or an equivalent rating with
such other publication of a similar nature as shall be in current use) in such
amounts and covering such risks as are usually and customarily carried with
respect to similar businesses according to their respective locations.

            8.7 Books and Records. The Company shall keep proper books of record
and account, in accordance with GAAP consistently applied.

            8.8 Back-Ups of Computer Software. The Company shall make backups of
all material computer software programs and databases and shall maintain such
software programs and databases at a secure off-site location.

            8.9 Confidentiality. Each of the Purchasers shall hold, and shall
cause its Affiliates and any of their respective representatives to hold, all
documents, materials and other information they receive or have received
regarding the Company in strict confidence, except (i) as required by law, (ii)
to the extent such information is or has previously been publically available
other than as a result of any action or non-action by Purchaser, its Affiliates
or any of their respective representatives, (iii) to the extent such information
was not acquired or obtained from the Company or any of its representatives or
(iv) to the extent necessary to enforce its rights under the Transaction
Documents in a legal proceeding before any Governmental Authority.

                                    ARTICLE 9

                                  MISCELLANEOUS

            9.1 Survival of Representations and Warranties. All of the repre
sentations and warranties made herein shall survive the execution and delivery
of this Agreement, any investigation by or on behalf of any of the Purchasers or
acceptance of the Purchased Shares, until 60 days after receipt by the
Purchasers of the Company's audited financial statements for the fiscal year
ended December 31, 1999, and at the end of such period, such representations and
warranties and related indemnification rights and obligations with respect
thereto shall expire; provided, however, that the representations and warranties
set forth in Sections 3.1, 3.2, 3.4, 3.7(a) and 3.9 shall 

                                       33
<PAGE>


survive without any expiration and Section 3.12 shall survive until the
expiration of the applicable statute of limitations.

            9.2 Notices. All notices, demands and other communications provided
for or permitted hereunder shall be made in writing and shall be by registered
or certified first-class mail, return receipt requested, telecopier, courier
service or personal delivery:

                  (a) if to the Company, to:

                      priceline.com Incorporated
                      4 High Ridge Park
                      Stamford, CT 06905
                      Telecopy: (203) 595-8344
                      Attention: Mr. Paul E. Francis
                                 Melissa M. Taub, Esq.

                      with a copy to:

                      Skadden, Arps, Slate, Meagher & Flom LLP
                      One Rodney Square
                      Wilmington, DE  19801
                      Telecopy: (302) 651-3001
                      Attention: Patricia Moran Chuff, Esq.

                  (b) if to any of the Purchasers, to the address or telecopy
number set forth opposite such Purchaser's name on the signature page hereto.

            All such notices and communications shall be deemed to have been
duly given when delivered by hand, if personally delivered; when delivered by
courier, if deliv ered by commercial courier service; five (5) Business Days
after being deposited in the mail, postage prepaid, if mailed; and when receipt
is mechanically acknowledged, if telecopied.

            9.3 Successors and Assigns; Third-Party Beneficiaries. This
Agreement shall inure to the benefit of and be binding upon the successors and
permitted assigns of the parties hereto. Subject to applicable securities laws,
each Purchaser may assign any of its rights under any of the Transaction
Documents to any of its Affiliates. The Company may not assign any of its rights
under this Agreement without the written consent of the Purchasers. Except as
provided in Article 7, no Person other than the parties hereto and their
successors and permitted assigns is intended to be a beneficiary of this
Agreement.

                                       34
<PAGE>


            9.4 Amendment and Waiver.

                  (a) No failure or delay on the part of the Company, or any
Purchaser in exercising any right, power or remedy hereunder shall operate as a
waiver thereof, nor shall any single or partial exercise of any such right,
power or remedy preclude any other or further exercise thereof or the exercise
of any other right, power or remedy. The remedies provided for herein are
cumulative and are not exclusive of any remedies that may be available to the
Company and any of the Purchasers at law, in equity or otherwise.

                  (b) Any amendment, supplement or modification of or to any
provision of this Agreement, any waiver of any provision of this Agreement, and
any consent to any departure by the Company or any of the Purchasers from the
terms of any provision of this Agreement, shall be effective only if it is made
or given in writing and signed by the Company and the Purchasers.

            9.5 Counterparts. This Agreement may be executed in any number of
counterparts and by the parties hereto in separate counterparts, each of which
when so exe cuted shall be deemed to be an original and all of which taken
together shall constitute one and the same agreement.

            9.6 Headings. The headings in this Agreement are for convenience of
reference only and shall not limit or otherwise affect the meaning hereof.

            9.7 Governing Law. This Agreement shall be governed by and construed
in accordance with the laws of the State of New York, without regard to the
principles of conflicts of law of any jurisdiction.

            9.8 Severability. If any one or more of the provisions contained
herein, or the application thereof in any circumstance, is held invalid, illegal
or unenforceable in any respect for any reason, the validity, legality and
enforceability of any such provision in every other respect and of the remaining
provisions hereof shall not be in any way impaired, unless the provisions held
invalid, illegal or unenforceable shall substantially impair the benefits of the
remaining provisions hereof.

            9.9 Entire Agreement. This Agreement, together with the exhibits and
schedules hereto and the other Transaction Documents, is intended by the parties
as a final expression of their agreement and intended to be a complete and
exclusive statement of the agreement and understanding of the parties hereto in
respect of the subject matter contained herein and therein. There are no
restrictions, promises, warranties or undertakings, other than those set forth
or referred to herein or therein. 

                                       35
<PAGE>


This Agreement, together with the exhibits and schedules hereto and the other
Transaction Documents, supersedes all prior agreements and understandings
between the parties with respect to such subject matter.

            9.10 Publicity. Except as may be required by any applicable
Requirement of Law, none of the parties hereto shall issue a publicity release
or public announcement or otherwise make any disclosure concerning this
Agreement or the tran sactions contemplated hereby, without prior approval by
the other parties hereto (which approval shall not be unreasonably withheld);
provided, however, that nothing in this Agreement shall restrict any of the
Purchasers from disclosing information (a) that is already publicly available
and (b) to its attorneys, accountants, consultants and other advisors to the
extent necessary to obtain their services in connection with such Purchaser's
investment in the Company. After the Closing, General Atlantic Partners, LLC may
disclose on its worldwide web page, www.gapartners.com, the name of the Company,
its address, the identity of the Company's Chief Executive Officer, a
description of the Company's business and the aggregate amount invested by its
Affiliates in the Company. If any announcement is required by law to be made by
any party hereto concerning this Agreement or the transactions contemplated
hereby, prior to making such announcement such party will deliver a draft of
such announcement to the other parties and shall give the other parties an
opportunity to comment thereon.

            9.11 Further Assurances. Each of the parties shall execute such
documents and perform such further acts (including, without limitation,
obtaining any consents, exemptions, authorizations or other actions by, or
giving any notices to, or making any filings with, any Governmental Authority or
any other Person, and otherwise fulfilling, or causing the fulfillment of, the
conditions to Closing set forth in Articles 5 and 6) as may be reasonably
required or desirable to carry out or to perform the provisions of this
Agreement and to consummate and make effective as promptly as possible the
transactions contemplated by this Agreement.

                                       36
<PAGE>

            IN WITNESS WHEREOF, the parties hereto have caused this STOCK
PURCHASE AGREEMENT to be executed and delivered by their respective officers
hereunto duly authorized on the date first above written.

                                PRICELINE.COM INCORPORATED


                                By:
                                    -------------------------------------
                                    Name:
                                    Title:


<PAGE>

            IN WITNESS WHEREOF, the parties hereto have caused this STOCK
PURCHASE AGREEMENT to be executed and delivered by their respective officers
hereunto duly authorized on the date first above written.

                                VULCAN VENTURES INCORPORATED


Notice                          By:
                                    -------------------------------------
                                    Name:
Vulcan Ventures Incorporated        Title:
110 110th Avenue NE
Bellevue, WA 98004-5840
Telecopy:  (425) 453-1985
Attention: William D. Savoy

<PAGE>

            IN WITNESS WHEREOF, the parties hereto have caused this STOCK
PURCHASE AGREEMENT to be executed and delivered by their respective officers
hereunto duly authorized on the date first above written.

                                LIBERTY PL, INC.


Notice                          By:
                                    -------------------------------------
                                    Name:
Liberty PL, Inc.                    Title:
c/o Liberty Media Corporation
8101 East Prentice Ave.
Suite 500
Englewood, CO 80111
Telecopy:  (303) 721-5434
Attention: Robert R. Bennett
           Charles Y. Tanabe, Esq.
<PAGE>

            IN WITNESS WHEREOF, the parties hereto have caused this STOCK
PURCHASE AGREEMENT to be executed and delivered by their respective officers
hereunto duly authorized on the date first above written.

                                GAP COINVESTMENT PARTNERS, L.P.

Notice                          By:
                                    -------------------------------------
                                    Name:
GAP Coinvestment Partners, L.P.     Title:
c/o General Atlantic Service
       Corporation
3 Pickwick Plaza
Greenwich, CT  06830
Telecopy:  (203) 622-4098
Attention: William E. Ford
           David A. Rosenstein


                                GENERAL ATLANTIC PARTNERS 50, L.P.

                                By: GENERAL ATLANTIC PARTNERS, LLC
                                    its General Partner

Notice                          By:
                                    -------------------------------------
                                    Name:
General Atlantic Partners 50, L.P.  Title:
c/o General Atlantic Service
        Corporation
3 Pickwick Plaza
Greenwich, CT  06830
Telecopy:  (203) 622-4098
Attention: William E. Ford
           David A. Rosenstein

<PAGE>

            IN WITNESS WHEREOF, the parties hereto have caused this STOCK
PURCHASE AGREEMENT to be executed and delivered by their respective officers
hereunto duly authorized on the date first above written.

                                QUANTUM INDUSTRIAL PARTNERS LDC

Notice                          By:
                                    -------------------------------------
                                    Name:
Quantum Industrial Partners LDC     Title:
c/o Curacao  International Trust
   Company N.v.
Kaya Flamboyan 9
Curacao, Netherlands Antilles


                                SFM DOMESTIC INVESTMENTS LLC

Notice                          By:
                                    -------------------------------------
                                    Name:
SFM Domestic Investments LLC        Title:
888 Seventh Avenue, 33rd Floor
New York, NY 10106
Telecopy: (212) 664-05442642

<PAGE>

            IN WITNESS WHEREOF, the parties hereto have caused this STOCK
PURCHASE AGREEMENT to be executed and delivered by their respective officers
hereunto duly authorized on the date first above written.

                                INTERNET INVESTORS I, L.L.C.


Notice                          By:
                                    -------------------------------------
                                    Name:
Internet Investors I, L.L.C.        Title:
c/o Starwood Capital Group
Three Pickwick Plaza
Suite 250
Greenwich, CT 06830
Attention: Jonathan D. Eilian

<PAGE>

            IN WITNESS WHEREOF, the parties hereto have caused this STOCK
PURCHASE AGREEMENT to be executed and delivered by their respective officers
hereunto duly authorized on the date first above written.


Notice                          
                                -------------------------------------
                                James Manzi
Jim Manzi
150 Yarmouth Road
Brookline, MA 02147
Telecopy:

<PAGE>

            IN WITNESS WHEREOF, the parties hereto have caused this STOCK
PURCHASE AGREEMENT to be executed and delivered by their respective officers
hereunto duly authorized on the date first above written.


Notice                          
                                -------------------------------------
                                William D. Savoy
William D. Savoy
677 120th Avenue NE
Suite 184
Bellevue, WA 98005
Telecopy: (425) 456-0453

<PAGE>

            IN WITNESS WHEREOF, the parties hereto have caused this STOCK
PURCHASE AGREEMENT to be executed and delivered by their respective officers
hereunto duly authorized on the date first above written.

                                ALLEN & COMPANY INCORPORATED


Notice                          By:
                                    -------------------------------------
                                    Name: 
Kim M. Wieland                      Title: 
Managing Director and
   Chief Financial Officer
Allen & Company
711 Fifth Avenue              
New York, NY 10022           
Telecopy: (212) 339-2642     



<PAGE>

                                                                    Exhibit 10.9


                         AIRLINE PARTICIPATION AGREEMENT
                         -------------------------------

THIS AGREEMENT (this "AGREEMENT"), dated April __, 1998, is by and among
priceline.com LLC, a Delaware limited liability company with an address at 5
High Ridge Park, Stamford, Connecticut 06905 ("PRICELINE.COM LLC"), PriceLine
Travel, Inc., a Delaware corporation with an address at 5 High Ridge Park,
Stamford, Connecticut 06905 ("PRICELINE TRAVEL" and, together with priceline.com
LLC, being collectively referred to herein as "PRICELINE"), and Trans World
Airlines, Inc., a Delaware corporation having a principal place of business at
One City Centre, 515 North 6th Street, St. Louis, Missouri 63101 (the
"AIRLINE").

                             PRELIMINARY STATEMENT:

PriceLine provides an electronic service via the internet that allows consumers
to purchase airline tickets at an offer price determined by the consumer (the
"PRICELINE SERVICE"). The consumer identifies the departure and return dates for
travel and the price the consumer is willing to pay for the fare. PriceLine then
determines if appropriate seats are available. If appropriate seats are
available, PriceLine Travel will issue a ticket on the applicable carrier.

The Airline desires to participate in the PriceLine Service and, in connection
therewith, will provide access to the Airline's inventory at pricing for the
origin and destination pairs (each, an "O&D") identified by the Airline in
accordance with the terms and conditions set forth in this Agreement.

PriceLine desires to include the Airline as a participating carrier in the
PriceLine Service and to have access to such inventory in accordance with the
terms and conditions set forth in this Agreement.

NOW, THEREFORE, in consideration of the covenants and agreements set forth in
this Agreement, the parties agree as follows:

I.     TERMS AND CONDITIONS RELATING TO AIRLINE TICKETS
       ------------------------------------------------

       1.     The Airline shall make available to PriceLine inventory at 
              pricing for O&Ds identified by the Airline (a "PriceLine Fare") 
              in accordance with the terms and conditions set forth in this 
              Agreement. It is expressly understood and agreed that the 
              Airline makes no commitment, whatsoever, regarding the number of 
              such O&Ds or the level of specific pricing except that such will 
              be communicated by the Airline to PriceLine under the procedures 


<PAGE>

                                                                               2


              identified in ATTACHMENT A, "PriceLine Availability, Pricing & 
              Ticketing Procedures", annexed hereto and made a part hereof.

       2.     The Airline acknowledges and agrees that all tickets issued by
              PriceLine on behalf of the Airline as contemplated by this
              Agreement (each, a "PRICELINE TICKET") shall be subject to the
              following restrictions:

              (a)     All PriceLine Tickets will be non-refundable,
                      non-endorsable and non-changeable, except as
                      otherwise required and/or authorized by the Airline
                      under Paragraph I.5 below;

              (b)     All travel will be round-trip with no stopovers or 
                      open-jaw travel permitted; and

              (c)     Frequent Flyer mileage and upgrades will not be permitted.

              The above restrictions will be communicated by PriceLine to
              the consumer via the internet and will be set forth on
              ticketing and/or itinerary documentation issued by PriceLine
              Travel.

       3.     All tickets issued under the terms of this Agreement will be 
              issued by PriceLine Travel (Agency ARC: 07-50854-6).  PriceLine 
              Travel will act as the agent of the Airline pursuant to the 
              Airlines Reporting Corporation Industry Agents Handbook and 
              Supplements, as established and in effect from time to time by 
              the Airline Reporting Corporation ("ARC"), and the TWA 
              Supplemental ARC Agency Reporting Agreement thereto 
              (collectively, the "ARC DOCUMENTS").  The Airline will provide 
              PriceLine Travel with a copy of the TWA Supplemental ARC Agency 
              Reporting Agreement concurrently with PriceLine Travel's 
              execution of this Agreement.  In addition, priceline.com LLC 
              will act as the agent of the Airline in the performance of its 
              obligations as contemplated by this Agreement.

       4.     PriceLine Travel will issue tickets on the routes of the Airline 
              (but not on Trans World Express) and will be subject to the 
              ticketing, availability rules, conditions of carriage and fare 
              rules as identified and communicated per the procedures 
              identified on ATTACHMENT A.  PriceLine will determine the price 
              at which tickets are sold based on offers received under the 
              PriceLine Service.  PriceLine will remit to the Airline, using 
              standard ARC reporting procedures, the Airline's fares, fees and 
              associated taxes for tickets issued by PriceLine on the routes 
              of the Airline.  The Airline will audit all tickets issued by 
              PriceLine on the routes of the Airline and establish debit memos 
              as appropriate.  All audits conducted by the Airline will be in 
              compliance 


<PAGE>

                                                                               3


              with the ARC Documents but the Airline is not precluded from 
              applying any other audit policies or practices.

       5.     The Airline will provide transportation for PriceLine customers 
              in accordance with its general conditions for carriage except as 
              noted in Paragraph I.2 above and any special handling procedures 
              as noted in ATTACHMENT B, "Special Handling Procedures", annexed 
              hereto and made a part hereof.

              PriceLine will provide customers with access to a telephone 
              service center that will respond to any consumer questions and 
              issues pertaining to special handling requirements for PriceLine 
              Tickets including processing any customer handling requirements 
              as identified and authorized by the Airline in ATTACHMENT B 
              HERETO.

       6.     All inquiries (including, without limitation, requests for 
              PriceLine Ticket refunds and credit card charges), received by 
              the Airline from actual or potential purchasers of PriceLine 
              Tickets will be referred to PriceLine's designated customer 
              service representatives for resolution. The Airline and 
              PriceLine agree to mutually resolve customer issues that remain 
              if PriceLine is unable to conclude the matter.

II.    CONFIDENTIALITY AND RELATED MATTERS

       1.     PriceLine and the Airline will each hold in confidence and, 
              without the prior written consent of the other, will not 
              reproduce, distribute, transmit, transfer or disclose, directly 
              or indirectly, in any form, by any means or for any purpose, any 
              Confidential Information of the other.  As used herein, the term 
              "CONFIDENTIAL INFORMATION" shall mean this Agreement and its 
              subject matter, and information that is provided to or obtained 
              from one party to the other party and that is valuable to the 
              disclosing party, and particularly any information which derives 
              economic value, actual or potential, from not being generally 
              known to, and not generally ascertainable by proper means by, 
              other persons who can obtain economic value from its disclosure 
              or use.  The recipient of Confidential Information may only 
              disclose such information to its employees on a need-to-know 
              basis and as necessary for the performance of the recipient's 
              obligations under this Agreement.  The obligations of a 
              recipient party with respect to Confidential Information shall 
              remain in effect during and after the term of this Agreement 
              (including any renewals or extensions hereof) except to the 
              extent necessary to comply with applicable law or the order or 
              other legal process of any court, governmental or similar 
              authority having jurisdiction over the recipient.


<PAGE>

                                                                               4


       2.     The recipient of Confidential Information will exercise 
              reasonable commercial care in protecting the confidentiality of 
              the other party's Confidential Information.

       3.     PriceLine will not identify the Airline's participation in any 
              specific O&D until a customer is booked and confirmed for 
              ticketing.  Further, PriceLine will not, in any media, indicate 
              that the Airline is participating or has participated in any 
              specific O&D except to indicate that a PriceLine customer must 
              accept a routing on one of the major full service airlines or, 
              in the case of international travel on one of the major 
              international airlines, available through the PriceLine Service. 
              The Airline may be identified, as appropriate, in such case and 
              for definitional purposes, as one of the major U.S. full service 
              airlines or major international airlines.

III.   REPORTING

       1.     PriceLine will provide the Airline with MIS reports, as 
              developed and available, providing (i) access to information 
              concerning each ticket issued by PriceLine Travel on the 
              Airline; (ii) aggregate information (i.e. non airline specific) 
              for all tickets issued by PriceLine Travel in each O&D that the 
              Airline participates in by providing a PriceLine Fare; and (iii) 
              aggregate information for all PriceLine offers not ticketed in 
              each O&D that the Airline participates in by providing a 
              PriceLine Fare.  PriceLine will use reasonable commercial 
              efforts to provide the Airline, not later than ninety (90) days 
              after public launch of the PriceLine Service, with secured 
              Intranet access to the information described in this Paragraph 
              III.1 through a PriceLine Intranet site for Airline queries.  
              PriceLine will provide the Airline a user identification number 
              and password for this purpose.

       2.     PriceLine will provide to the Airline the methodology for 
              selecting a carrier in processing customer offers and the 
              supporting application source code. This methodology may be 
              modified or adjusted from time to time by PriceLine. PriceLine 
              will use its best efforts to provide, in writing, any 
              modifications or adjustments to the methodology then in effect 
              within 5 (five) business days of any such modification or 
              adjustment.

       3.     PriceLine will provide to the Airline an annual statement by 
              PriceLine's independent accounting firm or other qualified 
              third-party concerning PriceLine's compliance with all reporting 
              and processing procedures in effect from time to time.


<PAGE>

                                                                               5


IV.    TERM OF AGREEMENT

       1.     This Agreement will commence on the date set forth on the
              first page of this Agreement and may be terminated by the
              Airline or PriceLine upon thirty (30) days prior written
              notice to the other party. The obligations of the parties
              under Paragraphs II and V of this Agreement shall indefinitely
              survive the expiration or termination of this Agreement.

       2.     In the event of written notice of termination of this
              Agreement in accordance with the terms of Paragraph IV.1
              above, all PriceLine Tickets issued prior to the effective
              date of termination specified in such notice will be accepted
              by the Airline under the terms of this Agreement.

V.     INDEMNIFICATION

       1.     PriceLine Travel and priceline.com LLC will jointly and
              severally indemnify, defend and hold harmless the Airline, its
              officers, directors, employees and agents, from and against
              all damages, losses and causes of action including, without
              limitation, damage to property or bodily injury, to the extent
              caused by priceline.com LLC's or PriceLine Travel's breach of
              this Agreement or by the negligence or willful acts of such
              party or any of their respective employees.

       2.     The Airline will indemnify, defend and hold harmless
              PriceLine, its officers, directors, employees and agents from
              and against all damages, losses and causes of action
              including, without limitation, damage to property or bodily
              injury, to the extent caused by the Airline's breach of this
              Agreement or by the negligence or willful acts of the Airline
              or any of its employees.

VI.    MILLENNIA CAPABILITY; PRICELINE SYSTEM

       1.     PriceLine hereby warrants to the Airline that its electronic 
              systems and related software are Millennia Capable; provided, 
              however, that such warranty shall not extend to the systems and 
              related software owned or controlled by a third party vendor.  
              For purposes of this Agreement, Millennia Capable shall mean the 
              ability and capability to avoid errors in processing arising 
              from dates occurring on and after the year 2000 (including such 
              errors as may occur on, before and after the year 2000).  The 
              Airline acknowledges and agrees that the performance of 
              PriceLine's obligations hereunder may be adversely affected in 
              the event that problems relating to the systems, software or 
              processes of third party vendors utilized 


<PAGE>

                                                                               6


              by PriceLine are not Millennia Capable.  In such case, PriceLine 
              will not have any liability hereunder, or any obligation to 
              correct or otherwise rectify such problems.  Further, the 
              existence of such problems, if any, will not constitute a breach 
              of PriceLine's obligations under this Agreement.

       2.     PriceLine will use reasonable commercial efforts to ensure that 
              all data, software and related systems necessary for the 
              operation of the PriceLine Service are adequately maintained and 
              are accessible at all times relevant to this Agreement. All 
              data, software and related systems necessary for the operation 
              of the PriceLine Service are fully redundant, are updated for 
              security purposes and are firewall protected.

VII.   GENERAL PROVISIONS

       1.     No waiver or breach of any of the provisions of this Agreement 
              shall be construed as a waiver of any succeeding breach of the 
              same or any other provision.

       2.     If any paragraph, sentence or clause of this Agreement shall be 
              adjudged illegal, invalid or unenforceable, such illegality, 
              invalidity or unenforceability shall not affect the legality, 
              validity or enforceability of this Agreement as a whole or of 
              any paragraph, sentence or clause hereof not so adjudged.

       3.     Any notice required or permitted hereunder shall be deemed 
              sufficient if given in writing and delivered personally, by 
              facsimile transmission, by reputable overnight courier service 
              or United States mail, postage prepaid, to the addresses shown 
              below or to such other addresses as are specified by similar 
              notice, and shall be deemed received upon personal delivery, 
              upon confirmed facsimile receipt, two (2) days following deposit 
              with such courier service, or three (3) days from deposit in the 
              United States mail, in each case as herein provided:


<PAGE>

                                                                               7


              If to PriceLine Travel or to     If to the Airline:
              priceline.com LLC:

              Priceline.com LLC                Trans World Airlines, Inc.
              5 High Ridge Park                One City Centre
              Stamford, CT 06905               515 North 6th Street
                                               St. Louis, Missouri 63101

              Attention:  Timothy Brier        Attention:  Joseph R. Vilmain
              Phone:    203-705-3087           Phone:_______________________
              Fax:      203-595-8343           Fax:_________________________

              A party may change its address and the name of its designated 
              recipient of copies of notices for purposes of this Agreement by 
              giving the other parties written notice of the new name and the 
              address, phone and facsimile number of its designated recipient 
              in accordance with this Paragraph VI.3.

       4.     This Agreement and the Attachments hereto, together with the ARC 
              Documents, supersede and replace all previous understandings or 
              agreements, whether oral or written, with respect to the subject 
              matter hereof. In the event that any provision or provisions of 
              the ARC Documents are contrary to or inconsistent with any term 
              or provision of this Agreement or any Attachment hereto, the 
              terms of this Agreement or such Attachment shall control.

       5.     This Agreement may be amended or modified only by a written 
              amendment executed by each of the parties.

       6.     The formation, construction, performance and validity of this 
              Agreement shall be governed by the internal laws of the State of 
              New York.

       7.     This Agreement may be executed in counterparts, each of which 
              shall be deemed an original, and together, shall constitute one 
              and the same instrument.

       8.     No party will in any manner or by any device, either directly or 
              indirectly, act in violation of any applicable law, governmental 
              order or regulation including the provisions of the Airline's 
              tariffs (except where such tariffs are specifically amended by 
              Airline, under the terms of this Agreement) and PriceLine 
              Travel's appointment or provision for the conduct of business as 
              established by ARC.


<PAGE>

                                                                               8


       9.     PriceLine agrees to notify the Airline promptly, in writing, in 
              the event there is a change of control in the ownership of 
              PriceLine Travel or priceline.com LLC.

       IN WITNESS WHEREOF, the parties have executed and delivered this 
       Agreement on the date indicated above.


PRICELINE TRAVEL, INC.                    TRANS WORLD AIRLINES, INC.


- -------------------------------------     --------------------------------------
By: Timothy Brier, President              By: Joseph R. Vilmain, Vice President 
                                          Sales and Reservations


PRICELINE.COM LLC


- -------------------------------------
By: Timothy Brier, Executive Vice
    President


<PAGE>

                                                                    ATTACHMENT A


             PRICELINE AVAILABILITY, PRICING & TICKETING PROCEDURES

1.     The Airline will provide PriceLine with access to the Airline's seat 
       inventory in accordance with specific fares and rules, filed by the 
       Airline directly into its designated CRS, for use by PriceLine in the 
       sale of airline tickets in accordance with the terms and conditions of 
       this Agreement. All PriceLine Fares filed by the Airline into its 
       designated CRS for use by PriceLine as herein provided will be deemed 
       fully guaranteed by the Airline.

2.     The PriceLine Fares that are filed by the Airline for use by PriceLine
       are fares that are not commissionable and domestic PriceLine Fares are
       inclusive of the then applicable U.S.
       transportation tax, if applicable.

       (a) All PriceLine Fares are exclusive of any domestic federal segment
       taxes, and any domestic or international fuel, departure, arrival,
       passenger facility, airport, terminal and/or security taxes, fees or
       surcharges which, when applicable, must be added to the fare collected
       from the passenger and shown on the PriceLine Ticket.

3.     PriceLine Tickets will be issued on standard ARC traffic documents and
       will be validated with the Airline's validation. The passenger and
       flight coupon will show "bulk" for the fare and will include all
       additional collections as noted in Paragraph 2 of this Attachment A.
       The auditor's coupon will show the fare as authorized by the Airline
       plus applicable taxes, fees and surcharges. PriceLine Travel will be
       the merchant of record and all tickets and payments will be settled
       between PriceLine and the Airline through ARC as a cash sale unless
       otherwise authorized by the Airline.

       (a) Promptly following the launch date of the PriceLine Service,
       PriceLine will provide the Airline with either a performance bond or an
       irrevocable letter of credit in the amount of $50,000. Such bond or
       letter of credit shall be in a form reasonably acceptable to the
       Airline, payable to the Airline on demand, and valid until all of
       PriceLine's payment obligations in respect of PriceLine Tickets sold
       have been fulfilled. Any letter of credit shall be drawn upon a bank
       reasonably acceptable to the Airline in U.S. dollars, with a U.S.
       branch presentable in a city in the United States currently served by
       the Airline. The Airline may draw upon such letter of credit to cover
       any failure of PriceLine to pay monies owed to the Airline with respect
       to the purchase and sale of PriceLine Tickets. PriceLine agrees to
       allow monthly reviews (at the end of each month during the term of this
       Agreement) of PriceLine Ticket sales on the Airline and, based on the
       dollar 


<PAGE>

                                                                               2


       amount of such PriceLine Tickets sales, the Airline may request that 
       such $50,000 performance bond or irrevocable letter of credit, as 
       applicable, be increased by a reasonable amount not to exceed the 
       average dollar value of sales for the subject period, multiplied by two.

       Until provision of the performance bond or irrevocable letter of
       credit, PriceLine shall deposit with the Airline the amount of $50,000
       to secure its payment obligations under this Agreement. Such deposit
       will be returned to PriceLine by wire transfer of immediately available
       funds to the account designated by PriceLine upon the Airline's receipt
       of such performance bond or irrevocable letter of credit.

4.     (b) The Airline shall maintain and communicate any changes in fares
       and/or rules to be used by PriceLine. The most current fares and rules
       may be accessed by PriceLine as authorized by the Airline through the
       designated CRS entries provided by the Airline, which entries shall
       include the fare and rules display designated from time to time by the
       Airline. The Airline will honor all PriceLine Tickets properly issued
       before the Airline has communicated any change in fares and/or rules.

5.     Examples of the type of fares and rules, as provided by the Airline,
       are included as ATTACHMENT A-1, annexed hereto and made a part hereof.
       Such attachment is for example only; only the current authorized fares
       and rules may be used.


<PAGE>

                                                                               3


                                                                  ATTACHMENT A-1
                                                                  --------------


                         EXAMPLE OF FARES AND RULES
                         --------------------------

       We will attach an example of a summary sheet of fares and rules that
       the Airline provides PriceLine for sample purposes only.


<PAGE>

                                                                    ATTACHMENT B
                                                                    ------------


                         SPECIAL HANDLING PROCEDURES
                         ---------------------------

1.     PriceLine Tickets issued on the Airline are subject to the published
       conditions of carriage and rules of the Airline except as specifically
       identified in this Agreement. Specifically, PriceLine will market the
       PriceLine Service with the following restrictions:

       (a) PriceLine Tickets will be non-refundable, non-endorseable and 
       non-changeable;

       (b) All travel will be round-trip with no stopovers or open-jaw travel 
       permitted; and 

       (c) Frequent Flyer mileage and upgrades will not be permitted.

2.     Notwithstanding the product definition that PriceLine markets to
       consumers, the Airline authorizes that its published conditions of
       carriage, rules and restrictions apply for the following (Check
       applicable boxes):

       (a)      Frequent Flyer Mileage             / /
       (b)      Involuntary Rerouting              / /
       (c)      Missed Flight provisions           / /
       (d)      Death or Illness provisions        / /
       (e)      Lost or stolen tickets             / /
       (f)      Other (Identify)                   / /

       In the event that the Airline chooses to honor frequent flyer mileage
       and/or seat upgrades, the Airline will be solely responsible for any
       tracking and documentation resulting therefrom.

3.     PriceLine Tickets are non-refundable and non-changeable.  PriceLine and 
       the Airline will handle any customer service issues regarding requests 
       for refunds or changes.  On the basis that the Airline wishes to 
       authorize refunds or changes on a case-by-case basis, the Airline will 
       interface with PriceLine's designated customer service representatives 
       and communicate the Airline's intent to refund or change specific 
       PriceLine Ticket.  In such cases, the applicable add-collect and any 
       Airline specific change fee will apply.  In all cases, PriceLine 
       Tickets that the Airline wishes to refund or change will be forwarded 
       to PriceLine and refunds or changes will be processed through standard 
       merchant procedures as outlined in the Industry Agents Handbook, 
       Section 80, subsection X and Section 6.



<PAGE>
                                                                   Exhibit 10.14


                       WORLDSPAN SYSTEM ACCESS AGREEMENT

      THIS System Access Agreement ("Agreement") is made this 4th day of August,
1997, between WORLDSPAN, L.P., having its principal place of business at 300
Galleria Parkway, N.W., Suite 2100, Atlanta, Georgia, 30339 ("WORLDSPAN"), and
Priceline, L.L.C. having its principal place of business at Five High Ridge
Park, Stamford, CT, 06905 ("Developer").

      WHEREAS, WORLDSPAN provides and markets computerized reservation services
and has developed and offers a computerized system which provides reservations,
ticketing, and other services for air transportation and other businesses (the
"System"); and

      WHEREAS, Developer desires to gain access to the System for the purposes
of developing and testing proposed software program(s) to be used in connection
with the System (the "Program") and WORLDSPAN is willing to make access to the
System available to Developer according to the terms of this Agreement.

      NOW, THEREFORE, IT IS AGREED;

1. Term.

      This Agreement shall become effective upon the date first written above
and will continue until terminated by either party at any time thereafter upon
not less than thirty (30) days prior written notice to the other, or until
otherwise terminated pursuant to this Agreement.

2. Access to System and Use of Data.

      (a) WORLDSPAN hereby grants to Developer access to the System through an
interchange address and one or more terminal addresses identified on Schedule A
of this Agreement and Developer accepts such access, all according to the terms
set forth herein. Developer agrees to pay to WORLDSPAN the fees and other
charges pursuant to this Agreement, including but not limited to, those included
on Schedule A.

      (b) Developer agrees that the System will be used solely for the purposes
and functions contemplated by this Agreement. Developer agrees that it will
limit its access to development and testing of the Product and for no other
purpose. Improper use shall include, but is not limited to, generation of
message activity with the System of such speed or volume that may lead to
malfunctions or degradation of System performance. In the event that during the
term of this Agreement Developer is provided access to the System as a travel
agent subscriber for the purpose of performing reservations and ticketing
functions. Developer acknowledges that access is provided hereunder solely for
the purposes set forth herein. Developer further acknowledges that the ability
to access the System as a travel agent subscriber does not entitle Developer to
perform its travel agent functions with the access provided hereunder, nor may
Developer access the System pursuant to its Subscriber Agreement as a travel
agent, or provide any third party with any service for the uses contemplated
herein.

      (c) Developer shall not copy, publish, disclose or otherwise make
available any compilations of air carrier service, data or any other information
obtained from WORLDSPAN to anyone in any form; provided, however, that the
foregoing shall not be construed to prevent Developer from preparing and
distributing to its customers reports normally generated through the use of
Developer's system. Improper use of the System shall include, but is not limited
to, speculative booking or reservation of space in anticipation of demand or
improper creation or modification of records. WORLDSPAN reserves the right to
inhibit Developer's access to the System for system maintenance or repairs or
for any other reason at WORLDSPAN's discretion.

      (e) Within thirty (30) days after the commencement of this Agreement,
Developer agrees to provide WORLDSPAN, in writing, with a list of all of
Developer's customers where any product, software or device provided by
Developer is being used in conjunction with the System. This list shall be
updated

<PAGE>

every six (6) months or as otherwise reasonably requested by WORLDSPAN. Nothing
herein shall be construed to require Developer to provide services to any
customer, but Developer agrees to abide by all the terms of this Agreement
regarding provision of such services in the event that it elects to so provide
them.

2. Equipment Lease -- Repairs.

      (a) WORLDSPAN leases to Developer, and Developer leases from WORLDSPAN,
the equipment (including hardware, peripherals, software and technical
specifications, configurations or addresses), if any, described on Schedule A
(collectively the "Equipment") at the fee set forth thereon. WORLDSPAN shall
retain title to and ownership of the Equipment, and the same shall be returned
to WORLDSPAN, shipping prepaid, at the termination of this Agreement in the same
condition as provided to Developer, normal wear and tear excepted. Developer
agrees to use the Equipment for the purposes of this Agreement only at
Developer's location identified above.

      (b) WORLDSPAN will install the Equipment at Developer's location,
following Developer's preparation of the installation area at Developer's
expense. Developer shall be solely responsible for establishing electricity for
the Equipment, installing cables, and such other matters as are necessary to
prepare the area for installation consistent with applicable laws, regulations,
building codes and any real property lease(s) of Developer. Developer will not
move or modify the Equipment without the prior written consent of WORLDSPAN.

      (c) WORLDSPAN or its service representative will provide repair services
for the Equipment during WORLDSPAN'S normal repair service hours, which are 8:30
a.m. through 5:00 p.m. local time, Monday through Friday, excluding WORLDSPAN
holidays. WORLDSPAN shall not pay for repair services if the Equipment
malfunction is caused by negligence, misuse, accident, fire, variation or
interruption of electricity, or any attempt to service the Equipment other than
by WORLDSPAN'S service representative (including the addition or removal of any
third party hardware, peripherals or software).

      (d) Developer shall take all necessary precautions to protect the System.

4. Installation.

      Within sixty (60) days following the execution of this Agreement, or as
soon thereafter as reasonably possible, WORLDSPAN shall cause the System to be
available at the Developer location identified above according to this
Agreement. Developer shall be solely responsible for procuring and paying for
the cost of the installation and maintenance of any personal computer, other
equipment and software necessary to enable Developer to access to the System
contemplated herein.

5. Disclaimer of Warranties

      (a) WORLDSPAN DISCLAIMS AND DEVELOPER HEREBY WAIVES ALL WARRANTIES,
EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO, ANY WARRANTY OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OR INTENDED USE, ANY
WARRANTY OF COMPATIBILITY BETWEEN THE SYSTEM, EQUIPMENT, SOFTWARE OR DATA
PROVIDED BY WORLDSPAN AND CUSTOMER OWNED EQUIPMENT OR SOFTWARE, OR ANY LIABILITY
IN NEGLIGENCE, TORT, STRICT LIABILITY OR OTHERWISE, WITH RESPECT TO THE SYSTEM,
EQUIPMENT, SOFTWARE, DATA OR SERVICES FURNISHED HEREUNDER, DEVELOPER AGREES THAT
WORLDSPAN SHALL NOT BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL,
CONSEQUENTIAL OR PUNITIVE DAMAGES UNDER ANY CIRCUMSTANCES, INCLUDING, BUT NOT
LIMITED TO, LOSS OF REVENUES, EVEN IF ADVISED OF THE RISK OF SUCH DAMAGES IN
ADVANCE.

      (b) WORLDSPAN shall not be liable to Developer nor deemed to be in default
of this Agreement, on account of any delays, errors, malfunctions, compatibility
problems or breakdowns with respect to the System, Equipment, data or services
provided hereunder, unless such delay, error,


                                      -2-
<PAGE>

malfunction or breakdown results solely from the gross negligence or willful
misconduct of WORLDSPAN.

      (c) Developer acknowledges that the installation or use of the Program or
the Developer's communications hardware (including peripherals) or software may
result in loss of or damage to Developer's hardware, software or data. Developer
agrees to take all reasonable precautions to prevent such loss and damage,
including copying data prior to installation and other reasonable and customary
measures, and adherence to manufacturer's instructions. Developer further agrees
to release and hold WORLDSPAN and its past and present directors, affiliates,
partners, officers, employees, agents and contractors harmless from and against
any losses, damages, liabilities, suits or fines caused by or arising from the
installation or use of the Program or the communications hardware (including
peripherals) or any other similar hardware or software utilized to permit
access to the System.

6. Indemnification.

      (a) Each party shall indemnify, defend and hold harmless the other party,
its past and present directors, affiliates, partners, officers, employees and
agents, from and against all liabilities, damages and expenses, and claims for
damages, suits, proceedings, recoveries, judgments or executions (including but
not limited to litigation costs, expenses, and reasonable attorneys' fees)
arising out of or in connection with any claim that the use of the indemnifying
party's system or data (including, without limitation, hardware, software,
peripherals, technical specifications, configurations or addresses) by the other
party infringes any third party patent, copyright, trademark or other property
right.

      (b) Each party shall indemnify, defend and hold harmless the other party,
its past and present directors, affiliates, partners, officers, employees and
agents from and against all liabilities, damages and expenses, claims for
damages, suits, proceedings, recoveries, judgments or executions (including but
not limited to litigation costs, expenses, and reasonable attorneys' fees) which
may be suffered by, accrued against, charged to or recoverable from the other
party, its past and present directors, affiliates, partners, officers, employees
or agents by reason of or in connection with the other party's performance or
failure to perform, or improper performance of any of the other party's
obligations under this Agreement.

7. Charges.

      (a) In addition to the fees and other charges described in Section 2 and
Section 3 above, Developer shall pay WORLDSPAN at the rate described in Schedule
A of this Agreement, for each message transacted by Developer pursuant to this
Agreement. For the purposes of this Agreement, a "Message" shall include each
electronic transaction generated by Developer to the System including, but not
limited to, transactions initiated by an individual using the "enter" or similar
key on a personal computer or terminal and those automatically or mechanically
generated by a software or hardware device. Examples include, but are not
limited to:

      o     a request to display a record and the associated response

      o     a request to store a remark and the associated response

      o     a request to end a transaction and the associated response

      o     a request to move the screen text down and the associated response

      (b) Developer shall pay to WORLDSPAN monthly, in advance, the nonvariable
fees pursuant to this Agreement. Billing for Message and bridge fees, as defined
herein, shall be made monthly after the end of the month in which such fees have
been incurred. Failure of WORLDSPAN to issue any invoice or bill shall not
relieve Developer of the obligation to pay for any charge owed WORLDSPAN
pursuant to this Agreement. Developer shall pay all fees and other charges
within fifteen (15) days of the date of each invoice. In the event that
Developer fails to pay within fifteen (15) days of an Invoice, WORLDSPAN may
levy a late payment charge computed at the rate of 1 1/2% per month on


                                      -3-

<PAGE>

the outstanding balance due hereunder from any month or fraction thereof that
such payment is in default.

      (c) Developer shall pay all sales, use, personal property, excise, license
and franchise taxes as well as any other similar fees, charges or assessments
which arise as a result of this Agreement or which may be imposed in connection
with the access to the System.

      (d) WORLDSPAN reserves the right to increase any charge to Developer under
this Agreement once each calendar year upon not less than thirty (30) days prior
written notice to Developer.

      (e) Developer agrees to advise each of its accounts of WORLDSPAN's fee
that will be billed to the account, for any bridge relationship established by
the account to the Developer. Developer agrees to pay WORLDSPAN for any bridge
relationship established by Developer to any WORLDSPAN subscriber, vendor or
contractor. This charge is set forth on Schedule A and may be modified by
WORLDSPAN from time to time.

8. Developer Support to Customers.

      Developer acknowledges that WORLDSPAN does not agree to provide, and will
not provide, any "help desk" assistance or similar user or technical support to
Developer or its customers with regard to any hardware (including peripherals),
software, product or services provided by Developer. Developer agrees that it
will notify its customers and staff that WORLDSPAN does not provide such
support, and Developer shall be solely responsible for all such support for the
benefit of its staff and customers.

9. Termination.

      (a) Either party shall be entitled to terminate this Agreement upon the
occurrence of any of the following events:

      (1)   Except for Developer's failure to make timely payment, if the other
            party shall refuse, neglect or fail to perform, observe or keep any
            of the material covenants, terms or conditions contained herein to
            be performed, observed or kept, and such refusal, neglect or failure
            shall continue for a period of thirty (30) days including weekends,
            after written notice, the non-defaulting party shall have the right,
            in addition to any other right or remedy it may have, to terminate
            this Agreement; or

      (2)   If the other party petitions for relief under the Bankruptcy Code of
            the United States, or any country or territory, or if voluntary
            bankruptcy proceedings are instituted by a party under any federal,
            state or foreign insolvency laws, or if such a proceeding is
            imminent, or if it is adjudged bankrupt, or if it makes any
            assignment for the benefit of its creditors of all or substantially
            all of its assets; or if an involuntary petition is filed or
            execution issued against it and not dismissed or satisfied within
            thirty (30) days; or if its interest hereunder passes by operation
            of law to any other person, except in case of merger or acquisition,
            the other party may, at its option, terminate this Agreement by
            written notice provided, however, that all monies owed hereunder
            prior to the date of termination shall be immediately due and
            payable.

      (b) WORLDSPAN shall be entitled to terminate this Agreement should
Developer fail to pay any amount due hereunder, and Developer fails to cure such
default within thirty (30) days after the date of written notice from WORLDSPAN.

10. Notices.

      All notices, requests, demands or other communications hereunder shall be
in writing, hand delivered, sent by first class mail, overnight mail, or
facsimile (upon electronic confirmation that the transmission was received) and
shall be deemed to have been given when received at the following addresses:


                                      -4-
<PAGE>

      if to WORLDSPAN:

                  WORLDSPAN, L.P.
                  300 Galleria Parkway, NW
                  Atlanta, Georgia 30339
                  U.S.A.
                  Facsimile: (770) 563-7004
                  ATTN: Karen Lennon; Manager - Emerging Markets

      with a copy to:

                  WORLDSPAN, L.P.
                  300 Galleria Parkway, NW
                  Atlanta, Georgia 30339
                  U.S.A.
                  Facsimile: (770) 563-7878
                  ATTN: Legal Department

If to Developer: At the address first written above.

      Any notice provided by facsimile which is received after 4:00 p.m. local
time shall be deemed received the following business day. A party may change its
addresses for notice on not less than ten (10) business days' prior written
notice to the other party.

11. Confidential Information.

      (a) Confidential information supplied by one party to another pursuant to
this Agreement is for the exclusive use of the receiving party and shall not be
disclosed or made available to any other person, firm, corporation or
governmental entity in any form or manner whatsoever; provided, however, that in
the event Confidential Information is subpoenaed or otherwise requested or
demanded by any court or governmental authority, the receiving party shall give
written notice to the disclosing party prior to furnishing the same and shall,
at the request of the disclosing party, exercise reasonable business efforts in
cooperation and at the sole expense of the disclosing party, to quash or limit
such request, demand and/or subpoena. The receiving party's obligations include
treating Confidential Information with at least the concern and protective
measures accorded any trade secrets, proprietary or confidential information and
materials of the receiving party. Nothing herein shall be construed to require
the disclosure of Confidential Information to the receiving party, or to require
the receiving party to accept Confidential Information.

      (b) Upon any termination of the Agreement, Developer agrees to deliver to
WORLDSPAN all documentation, materials, information, Equipment, technical
configurations and specifications supplied by WORLDSPAN and shall also certify
in writing that all copies have been returned to WORLDSPAN.

      (c) Developer understands that the information it has access to through
the System is confidential and proprietary and includes valuable trade secrets
of WORLDSPAN and that WORLDSPAN would suffer irreparable harm if such
confidential or propriety information or trade secrets are directly or
indirectly (i) used by Developer for any purpose other than those specifically
set forth herein, or (ii) disclosed to any third party including affiliates of
Developer which may operate as ARC approved travel agents in direct or indirect
competition with the travel agents subscribing to WORLDSPAN or software
developers in direct or indirect competition with WORLDSPAN. Accordingly,
Developer agrees not to use the information for other purposes, disclose, or
allow access to such information to any third party. Developer agrees that a
breach of these conditions shall be grounds sufficient for immediate termination
of, or suspension of, services under this Agreement, inhibiting Developer's
access to and use of the System, and appropriate legal relief. Upon termination
of this Agreement for any cause or reason, Developer agrees to deliver to
WORLDSPAN all materials or


                                      -5-
<PAGE>

information supplied pertaining to WORLDSPAN and shall also confirm that all
copies of such material have been returned to WORLDSPAN or destroyed.

      (d) WORLDSPAN understands that the information it has access to through
the right of access to Developer's facilities is of a confidential and
proprietary nature, and WORLDSPAN may hereinafter have access to other
information of Developer which is of a confidential and proprietary nature, and
could result in irreparable harm to Developer if any such confidential or
proprietary information is directly or indirectly (i) used by WORLDSPAN for any
purpose other than as specifically set forth herein, or (ii) disclosed to any
third party. Accordingly, WORLDSPAN agrees not to use the information for other
purposes, disclose or allow access to such information to any third party.
WORLDSPAN agrees that a breach of these conditions shall be grounds sufficient
for immediate termination of this Agreement, and legal as well as injunctive
relief. Upon termination of this Agreement for any cause or reason, WORLDSPAN
agrees to deliver to Developer all materials or information supplied pertaining
to Developer and shall also confirm that all copies of such material have been
returned to Developer or destroyed.

      (e) WORLDSPAN and Developer agree that any and all non-disclosure and use
covenants contained herein shall survive for a period of five years any
termination of this Agreement.

12. Modifications.

      WORLDSPAN retains the right, in its sole discretion, to enhance, modify or
alter the operation of the System at any time and further retains the right to
make such enhancements, modifications or alterations generally available to
other users of the System. WORLDSPAN shall use reasonable business efforts to
give Developer written notice prior to loading of enhancements, modifications or
alterations, other than those corrective in nature, which would materially
adversely affect the services provided to Developer under this Agreement.

13. Title

      Title and full and complete ownership rights to all WORLDSPAN owned or
developed software (including source and object code) and other technical
specifications, addresses or configurations (collectively the "Software")
associated with or contained in the System or used by WORLDSPAN in connection
with this Agreement shall remain with WORLDSPAN. Developer understands and
agrees that WORLDSPAN's owned or developed Software is WORLDSPAN's trade secret,
proprietary information, and confidential information whether any portion
thereof is or may be validly copyrighted or patented. Any Software provided to
Developer is provided by license only and such license is personal,
non-exclusive, non-transferable and limited to the right to use such Software
during the term of this Agreement only according to guidelines established by
WORLDSPAN from time to time. Such Software shall be utilized by Developer only
in accordance with this Agreement and shall not be copied, duplicated,
reproduced, manufactured, de-compiled, reverse engineered, incorporated into any
software (including any source code, object code or algorithms), modified or
disclosed in any form by any media to any other person or party. Developer
agrees to abide by any terms imposed by any third party that has directly or
indirectly licensed Developer to use Software pursuant to this Agreement. Upon
termination of this Agreement. Developer shall immediately return to WORLDSPAN
any Software provided by WORLDSPAN. Nothing herein shall be construed to require
WORLDSPAN to deliver any Software to Developer or to require Developer to accept
such Software.

14. No Endorsement.

      Nothing herein shall be construed to constitute an endorsement by
WORLDSPAN of any product, software, device or service marketed, sold or provided
by Developer. Developer shall not be entitled to use the name "WORLDSPAN" or any
WORLDSPAN product mark or logo in any fashion, except as otherwise agreed in
writing.

15. General Provisions.


                                      -6-
<PAGE>

      (a) Nothing in this Agreement is intended or shall be construed to
create or establish an agency, partnership, or joint venture relationship
between the parties.

      (b) The captions in this Agreement are for convenience only and in no way
define, limit, or enlarge the scope of this Agreement or any of the provisions
therein. Capitalized terms shall have the meanings assigned in this Agreement.

      (c) No waiver by either party of any provision or any breach of this
Agreement constitutes a waiver of any other provision or breach of this
Agreement and no waiver shall be effective unless made in writing. The right of
either party to require strict performance and observance of any obligations
hereunder shall not be affected in any way by any previous waiver, forebearance
or course of dealing.

      (d) Except for Developer's obligation to make payments hereunder, neither
party will be deemed in default of this Agreement as a result of a delay in
performance or failure to perform its obligations caused by acts of God or
governmental authority, strikes or labor disputes, fire, acts of war, failure of
third party suppliers, or for any other cause beyond the control of that party.

      (e) Developer shall not sell, assign, license, sub-license, franchise or
otherwise convey in whole or in part to any third party this Agreement or the
services provided hereunder without the prior written consent of WORLDSPAN,
except that Developer may freely assign all rights, title, interest and
obligations under this Agreement to any taker of all, or substantially all of
Developer's assets.

      (f) This is a non-exclusive agreement. Similar agreements may be entered
into by either party with any other person.

      (g) This Agreement shall be governed by, construed, interpreted and
enforced according to the laws of the State of Georgia and of the United States
of America, without regard to principles of conflict of laws and rules. Each
party hereby consents to the non-exclusive jurisdiction of the courts of the
State of Georgia and United States Federal Courts located in Georgia to resolve
any dispute arising out of this Agreement.

      (h) Each party shall not make any use of the other party's company name,
logo, trademarks or service marks, without the prior written consent of the
party.

      (i) In the event that any material provision of this Agreement is
determined to be invalid, unenforceable or illegal, then such provision shall be
deemed to be superseded and the Agreement modified with a provision which most
nearly corresponds to the intent of the parties and is valid, enforceable and
legal.

      (j) This Agreement constitutes the final and complete understanding and
agreement between the parties concerning the subject matter hereof. Any prior
agreements, understandings, negotiations or communications written or otherwise
are deemed superseded by this Agreement. This Agreement may be modified only by
a further written agreement executed by an authorized representative of the
parties hereto.


                                      -7-
<PAGE>

      IN WITNESS WHEREOF, Developer and WORLDSPAN have executed this Agreement
by their respective authorized representatives as of the day and year first
above written.

Priceline, L.L.C.                            WORLDSPAN, L.P.
- ---------------------------------
(Legal Name of Person or Company)



By: /s/ Jesse Fink                           By: /s/ Karen Lennon
    -----------------------------                -------------------------------

Print Name: Jesse Fink                       Name: Karen Lennon
            ---------------------

Print Title: C.O.O.                          Title: Manager - Emerging Markets
             --------------------


                                    -8-


<PAGE>

                                                                   Exhibit 10.15



                                    CALLTECH
                              MASTER AGREEMENT FOR
                         OUTSOURCING CALL CENTER SUPPORT

         THIS AGREEMENT (this "Agreement"), dated as of ____________, 1998, is
between priceline.com LLC, a Delaware limited liability company with offices
located at Five High Ridge Park, Stamford, Connecticut 06905-1325 (herein
"PRICELINE"), and CALLTECH Communications, Incorporated, with offices located at
4189 ArlingGate Lane, Columbus, Ohio 43228 (herein "CALLTECH").

         WHEREAS, PRICELINE is engaged in several businesses including the
business of selling airline travel services through its Internet site
priceline.com (the "Site") and through its toll-free telephone number
800-PRICELINE (the "Toll-Free Number"); and

         WHEREAS, PRICELINE desires to retain the services of CALLTECH to
provide customer support and telemarketing services to customers and potential
customers of PRICELINE's airline travel business (each, a "Customer"), and
CALLTECH desires to provide such services, on the terms and conditions set forth
in this Agreement.

         NOW, THEREFORE, in consideration of the mutual covenants contained
herein, the parties hereby agree as follows:

                                   ARTICLE 1.
                 ENGAGEMENT OF CALLTECH; DESCRIPTION OF SERVICES

         SECTION 1.1.  ENGAGEMENT OF CALLTECH

         Subject to the terms and conditions of this Agreement, PRICELINE hereby
retains CALLTECH to provide the Customer support and telemarketing services set
forth below (collectively, the "Services"), and CALLTECH hereby accepts such
engagement.

                  (a)  CALLTECH will provide PRICELINE inbound teleservice
support for PRICELINE Customers who have purchased airline tickets through the
Site. CALLTECH will provide such services in accordance with the specifications
set forth on SCHEDULE A attached hereto and made a part hereof (collectively,
the "Inbound Teleservices").

                  (b)  In addition to the Inbound Teleservices, CALLTECH will
provide inbound telemarketing services for Customers using the Site and/or the
Toll-Free Number to complete airline ticket request transactions with PRICELINE.
CALLTECH will provide such services in accordance with the specifications set
forth on SCHEDULE B attached hereto 


                             PRIVATE/PROPRIETARY
                             -------------------
     CONTAINS PRIVATE AND/OR PROPRIETARY INFORMATION. MAY NOT BE USED OR
      DISCLOSED OUTSIDE PRICELINE.COM LLC AND CALLTECH COMMUNICATIONS,
             INCORPORATED EXCEPT PURSUANT TO A WRITTEN AGREEMENT


<PAGE>

and made a part hereof (the "Inbound Telemarketing Services" and, together 
with the Inbound Teleservices and any other services provided by CALLTECH 
pursuant to paragraphs (c) and (d) of this Section 1.1, being collectively 
referred to herein as the "Services").

                  (c)  During the Term (as hereinafter defined) of this
Agreement, CALLTECH shall, at the option of PRICELINE, provide outbound up-sell
telemarketing services to Customers on terms and conditions to be agreed upon in
good faith by the parties.

                  (d)  CALLTECH will also provide such additional related
services as set out in this Agreement (herein "Related Services") including,
without limitation, the following:

         1.1.1.   CALLTECH agrees to notify PRICELINE on a daily basis of any
information required by PRICELINE's Customers. The parties agree that PRICELINE
is responsible for fulfilling such requests. Should CALLTECH's notice obligation
significantly interfere with its primary Service activities, CALLTECH will
notify PRICELINE. The parties agree that upon such notice, they will work
cooperatively toward an amicable solution.

         1.1.2.   CALLTECH agrees to provide PRICELINE with such information and
reports related to Services created by the CALLTECH telephone system. The
initial list of reports are set forth on SCHEDULE C annexed hereto and made a
part hereof. Additional reports, as agreed to by the parties, shall be provided
by CALLTECH during the Term and shall be deemed included on SCHEDULE C annexed
hereto effective as of the date agreed to by CALLTECH and PRICELINE. Report
topics may include performance, users, applications and lost Contacts (as
hereinafter defined), among others.

         1.1.3.   As set forth in SCHEDULES A and B annexed hereto, CALLTECH
agrees to allow PRICELINE, through reasonable mechanisms to be made available by
CALLTECH to PRICELINE, to monitor CALLTECH's service handling of Contacts for
Products (as hereinafter defined), provided that this activity doesn't
significantly interfere with primary Service activity. PRICELINE agrees to
provide CALLTECH with any and all information, reports, or feedback related to
Service quality, which are created by the monitoring of Contacts.

         SECTION 1.2.  PRODUCTS

         CALLTECH will provide the Services for all airline related goods and
services offered by PRICELINE through the Site and the Toll-Free Number
(collectively, the "Products"), and any other products related thereto as
designated from time to time by 


                                      -2-


                             PRIVATE/PROPRIETARY
                             -------------------
     CONTAINS PRIVATE AND/OR PROPRIETARY INFORMATION. MAY NOT BE USED OR
      DISCLOSED OUTSIDE PRICELINE.COM LLC AND CALLTECH COMMUNICATIONS,
             INCORPORATED EXCEPT PURSUANT TO A WRITTEN AGREEMENT


<PAGE>

PRICELINE (the "Related Products"). All terms and conditions herein apply to 
the Products and the Related Products. If Related Products (other than any 
usual and customary updates, upgrades, new versions, extensions or 
evolutionary developments to the Products as would typically be expected to 
occur in products and services such as the Products) are introduced during the 
Term of this Agreement, PRICELINE shall provide reasonable advance notice of 
and information about such additional Related Products to CALLTECH to enable 
CALLTECH to inform and train its CSRs (as defined in SCHEDULE A annexed 
hereto) as necessary and appropriate to provide quality Services with respect 
to such additional Related Products. The provision of any Services for such 
additional Related Products by CALLTECH may require an adjustment of the fees 
set forth on SCHEDULE F annexed hereto, but only if the additional Related 
Products designated by PRICELINE are of a nature so as to require materially 
more (or materially different and more expensive) resources from CALLTECH in 
order for CALLTECH to provide quality Services meeting the performance metrics 
set forth in this Agreement.

         SECTION 1.3.  HOURS OF OPERATION

                  (a)  CALLTECH will provide the Inbound Teleservices 365 days 
per year from 9 a.m. to 9 p.m. Eastern Standard Time, Monday through Friday, 
and from 12 p.m. to 6 p.m. Eastern Standard Time, Saturdays and Sundays 
commencing on the Teleservices Launch Date (as defined in SCHEDULE A annexed 
hereto).

                  (b)  CALLTECH shall provide the Inbound Telemarketing Services
twenty-four (24) hours per day, seven (7) days per week, 365 days per year
commencing on the Telemarketing Launch Date (as defined in SCHEDULE B annexed
hereto).

         SECTION 1.4.  FACILITY

         CALLTECH will utilize its support facility at 4189 ArlingGate Lane,
Columbus, Ohio (the "Facility") for delivery of Services for the Products. The
Facility will be equipped with telephone systems, computer systems, and various
CALLTECH support and call monitoring tools, such as documentation and knowledge
bases, to be used in the delivery of the Services. CALLTECH shall bear all
expenses of operating the Facility, including all expenses for equipment and
systems necessary to connect to any telecommunications circuits or facilities
utilized by PRICELINE to bring calls to the Facility. SCHEDULE C annexed hereto
and made a part hereof identifies the minimum capabilities CALLTECH shall
maintain with respect to the Facility.


                                      -3-


                             PRIVATE/PROPRIETARY
                             -------------------
     CONTAINS PRIVATE AND/OR PROPRIETARY INFORMATION. MAY NOT BE USED OR
      DISCLOSED OUTSIDE PRICELINE.COM LLC AND CALLTECH COMMUNICATIONS,
             INCORPORATED EXCEPT PURSUANT TO A WRITTEN AGREEMENT


<PAGE>

                                   ARTICLE 2.
                                 SERVICE LEVELS

         SECTION 2.1.  DEFINITIONS; SERVICE LEVELS

         2.1.1.   CALL DEFINITIONS:

         ACTUAL HANDLING TIME: Shall mean (i) in the case of an Inbound Call (as
         hereinafter defined) by a CSR or an outbound Customer callback, the
         time that is measured from when the call is physically answered by the
         CSR or the PRICELINE Customer respectively until the call is physically
         terminated; and any additional wrap up work performed related to such
         call prior to becoming physically available to receive the next Inbound
         Call or to make the next Customer callback, and (ii) in the case of an
         Automated Call (as hereinafter defined), the time that is measured from
         when the caller enters the CallTech Voice Response Unit (VRU) until
         such caller leaves the VRU.

         AUTOMATED CALL: Shall mean an Inbound Call that is delivered to an
         electronic voice message rather than to a CSR as the means of providing
         Services as described in this Agreement.

         CONTACT: Shall mean a support incident, defined as a single in-coming
         support request via telephonic voice (a "Voice Contact"), fax or
         written or electronic correspondence (an "E-mail Contact") regarding
         any Product.

         INBOUND CALL: Is defined as a call that has physically arrived to
         CALLTECH's Interactive Voice Response Unit (an "IVR") or similar system
         by way of PRICELINE's IVR or other mechanism for the purpose of
         providing Services as described in this Agreement.

         MAXIMUM HOLD TIME: Shall be measured from the time an Inbound Call is
         placed in a call group queue, prior to being physically delivered and
         answered by a CSR or an automated voice response unit (a "VRU").

         SECTION 2.2.  SERVICE LEVELS

         SCHEDULE E annexed hereto and made a part hereof sets forth the
performance requirements of CALLTECH applicable to its handling of Inbound
Calls, Contacts and the Actual Handling Time for Inbound Calls for all Services.


                                      -4-


                             PRIVATE/PROPRIETARY
                             -------------------
     CONTAINS PRIVATE AND/OR PROPRIETARY INFORMATION. MAY NOT BE USED OR
      DISCLOSED OUTSIDE PRICELINE.COM LLC AND CALLTECH COMMUNICATIONS,
             INCORPORATED EXCEPT PURSUANT TO A WRITTEN AGREEMENT


<PAGE>

         SECTION 2.3.      ESCALATION PROCEDURE

         PRICELINE recognizes that there may be instances where CALLTECH will
not be able to resolve a Customer Contact without PRICELINE's assistance.
Promptly following the execution of this Agreement, both parties will mutually
agree to an escalation procedure for resolving support problems that require
PRICELINE's technical personnel and/or a PRICELINE third party vendor. PRICELINE
agrees to provide necessary and timely resources to CALLTECH to enable CALLTECH
to resolve escalated problems in a timely manner. Examples of such resources
include documentation, knowledgebase, escalation process, hardware, software and
support technicians.

         SECTION 2.4.  CUSTOMER CALLBACKS

         CALLTECH agrees that in the event a CALLTECH CSR is unable to resolve a
support incident during an Inbound Call, the CSR will make all reasonable
efforts to contact the Customer as soon as possible with the solution. All
telecommunications costs for these callbacks shall be borne by Priceline. In the
event Priceline selects to be billed on a per-call basis, these callbacks shall
be considered a billable call.

         SECTION 2.5.  CALL LENGTH

         PRICELINE and CALLTECH recognize that the amount of time a CSR spends
on an individual voice Contact can impact both Service levels and fees.
PRICELINE's expected average call length for Products is set out on SCHEDULE E
annexed hereto. If CALLTECH experiences any significant increase in call length,
CALLTECH agrees to notify PRICELINE and will work toward determining how to
accommodate the increase by either modifying the Service level or increasing the
staff as mutually agreed.

                                   ARTICLE 3.
                PRICELINE TOOLS, TELECOMMUNICATIONS AND TRAINING

         SECTION 3.1.  PRICELINE TOOLS

         PRICELINE agrees to provide CALLTECH with sufficient copies of Products
and related materials, including, but not limited to, copies of software,
documentation, licenses and Product information as reasonably necessary to
provide Services for the Products. CALLTECH acknowledges that its use of such
tools may be subject to the terms of license agreements required by PRICELINE or
its third party suppliers, and CALLTECH agrees to abide by all the terms and
conditions of such licenses in connection with its use of such tools. PRICELINE
shall only be obligated to supply one copy of any documentation or other such
written materials relating to any such tools, and CALLTECH may make such 


                                      -5-


                             PRIVATE/PROPRIETARY
                             -------------------
     CONTAINS PRIVATE AND/OR PROPRIETARY INFORMATION. MAY NOT BE USED OR
      DISCLOSED OUTSIDE PRICELINE.COM LLC AND CALLTECH COMMUNICATIONS,
             INCORPORATED EXCEPT PURSUANT TO A WRITTEN AGREEMENT


<PAGE>

number of copies (and only such number of copies) of such materials as are 
necessary for it to provide Services hereunder.

         SECTION 3.2.  TELECOMMUNICATIONS

         PRICELINE assumes all expenses related to the sending of Contacts to
CALLTECH, including provision of telecommunication lines and the bearing of
network costs associated with routing Inbound Calls to the Facility. CALLTECH is
responsible for properly equipping the Facility with the necessary hardware to
receive and handle Contacts as required by this Agreement.

         SECTION 3.3.  TRAINING

         PRICELINE will provide one copy of necessary training materials to
CALLTECH on all versions and aspects of Products that are unique or specific to
PRICELINE's services at no charge to CALLTECH. CALLTECH trainers at CALLTECH's
Facility will provide training for CALLTECH CSRs, unless otherwise agreed to in
writing by the parties. Training will be delivered based on technical
documentation for all aspects of the Products which are unique or specific to
PRICELINE's services and all updates, upgrades and revisions thereto required to
provide the Services will be provided to CALLTECH by PRICELINE at no charge to
CALLTECH. CALLTECH agrees to use said documentation for Service purposes only.
CALLTECH agrees to use all training materials for training and support purposes
for the Services only. CALLTECH agrees to provide standard CALLTECH support
training to its employees at the Facility, which shall include (at a minimum)
training on the standard types of underlying hardware, operating system and
application (e.g., browser) software required or typically used in conjunction
with the Products. PRICELINE shall have the right to review and approve the
level of proficiency to which the CSRs are to be trained by CALLTECH to
facilitate the performance of quality Services, which approval shall not be
unreasonably withheld. Except in an emergency and upon consultation with
PRICELINE, CALLTECH shall not assign CSRs to provide Services hereunder unless
they have received adequate training as approved by PRICELINE and otherwise meet
the requirements applicable to CSR's as set forth on SCHEDULES A and B annexed
hereto.

                                   ARTICLE 4.
                                      FEES

         SECTION 4.1.  FEES FOR SERVICE

         CALLTECH agrees to perform the Services for the fees set forth on
SCHEDULE E annexed hereto and made a part hereof. Except as provided in Section
5.1 of this Agreement, such fees cannot be modified by CALLTECH.


                                      -6-


                             PRIVATE/PROPRIETARY
                             -------------------
     CONTAINS PRIVATE AND/OR PROPRIETARY INFORMATION. MAY NOT BE USED OR
      DISCLOSED OUTSIDE PRICELINE.COM LLC AND CALLTECH COMMUNICATIONS,
             INCORPORATED EXCEPT PURSUANT TO A WRITTEN AGREEMENT


<PAGE>

         SECTION 4.2.  PAYMENT

         Commencing with the end of the month of the Telemarketing Launch Date
and each month thereafter during the Term (as hereinafter defined), CALLTECH
will provide PRICELINE with a monthly itemized statement for the Services
rendered during the preceding monthly period. In addition, CALLTECH will bill
and PRICELINE will pay for Related Services and such other charges as are
provided for herein on an as incurred basis (along with its regular monthly
invoice). PRICELINE will pay net thirty (30) days from receipt of each invoice
in United States dollars. If PRICELINE is delinquent in the payment of any
invoice, and fails to remedy the delinquency within thirty (30) days after
written notice of delinquency is received by PRICELINE, PRICELINE shall be
obligated to pay late charges in a total amount not to exceed one and one-half
percent (1 1/2%) per month on the unpaid balance of any undisputed portion of
the invoice which is unpaid. In the event of a dispute with regard to a portion
of any invoice, the disputed portion may be withheld until resolution of the
dispute but any undisputed portion shall be paid as provided herein.

         SECTION 4.3.  RECORD KEEPING

         CALLTECH agrees to keep accurate books of account and records (in
accordance with generally accepted accounting principles consistently applied)
at the address set forth on the first page of this Agreement detailing all fees
for its Services. Such books and records shall be maintained by CALLTECH for a
period of three (3) years after termination or expiration of this Agreement.
Upon reasonable notice of not less than thirty (30) days, PRICELINE shall have
the right, for each twelve (12) month period during the Term, to inspect and
audit such books of account and records to verify the accuracy of the
information contained in any invoice or the amount of fees for Services paid to
all CALLTECH hereunder. The parties agree that any dispute as to the fees paid
to or charged by CALLTECH for the Services that can not be resolved by the
parties shall be settled by arbitration as provided in Section 7.11 of this
Agreement.

         SECTION 4.4.  TAXES

         CALLTECH shall be solely responsible for the preparation and submission
to applicable authorities of its CSRs' or other employees' income tax and FICA
forms and the payment of all of such persons' salaries, employer contributions
and employee benefits. PRICELINE shall be solely responsible for all applicable
federal, state and local taxes and charges arising out of or related to sales of
the Products and any such taxes shall be assumed and paid for by PRICELINE.
CALLTECH and PRICELINE shall be solely responsible for the preparation and
submission to applicable authorities of their respective federal, state and
local income taxes attributable to income derived by each such party in
connection with the subject matter of this Agreement.


                                      -7-


                             PRIVATE/PROPRIETARY
                             -------------------
     CONTAINS PRIVATE AND/OR PROPRIETARY INFORMATION. MAY NOT BE USED OR
      DISCLOSED OUTSIDE PRICELINE.COM LLC AND CALLTECH COMMUNICATIONS,
             INCORPORATED EXCEPT PURSUANT TO A WRITTEN AGREEMENT


<PAGE>

                                   ARTICLE 5.
                                TERM OF AGREEMENT

         SECTION 5.1.  TERM

         The initial term of this Agreement shall commence on the date hereof
and shall continue for a period of one (1) year from the Telemarketing Launch
Date (the "Initial Term"). This Agreement shall automatically be extended for
successive one (1) year terms (each a "Renewal Term") unless either party gives
the other written notice of its intention not to extend this Agreement at least
ninety (90) days prior to the end of the then current term, or unless terminated
as provided elsewhere herein (the Initial Term, together with each Renewal Term,
if any, being collectively referred to herein as the "Term"). Any time after
expiration of the Initial Term, CALLTECH may change the prices and terms on
which Services will be provided by providing at least one hundred twenty (120)
days prior written notice to PRICELINE (the "Fee Notice Period"). PRICELINE
shall have the right, in its sole discretion, to reject such changes and, in
such case, this Agreement shall automatically terminate without penalty to
either party upon expiration of the Fee Notice Period.

         SECTION 5.2.  CONDITIONS FOR TERMINATION BASED ON NON-PERFORMANCE

         5.2.1.   PRICELINE may terminate this Agreement without penalty if
CALLTECH fails to meet any of its performance obligations hereunder or otherwise
commits a breach of any term or provision of this Agreement and fails to cure
the same within thirty (30) days after written notice from PRICELINE. This
Agreement shall automatically terminate forthwith without notice in the event
CALLTECH's liabilities exceed its assets, or if CALLTECH is unable to pay its
debts as they become due, or files or has filed against it a petition in
bankruptcy, for reorganization or for the adoption of an arrangement under any
present or future bankruptcy, reorganization or similar law (which petition if
filed against CALLTECH shall not be dismissed within sixty (60) days from the
filing date), or if CALLTECH makes a general assignment for the benefit of its
creditors or is adjudicated a bankrupt, or if a receiver or trustee of the
CALLTECH's business or all or substantially all of the CALLTECH's property is
appointed, or if CALLTECH discontinues its business.

         5.2.2.   Any default claimed by CALLTECH against PRICELINE which cannot
be resolved by negotiation between the parties shall be referred to binding
arbitration by CALLTECH as provided in Section 7.11 of this Agreement, and
CALLTECH shall not be entitled to terminate this Agreement or suspend, in whole
or in part, the performance of its obligations hereunder on account of any such
breach pending outcome of the arbitration.


                                      -8-


                             PRIVATE/PROPRIETARY
                             -------------------
     CONTAINS PRIVATE AND/OR PROPRIETARY INFORMATION. MAY NOT BE USED OR
      DISCLOSED OUTSIDE PRICELINE.COM LLC AND CALLTECH COMMUNICATIONS,
             INCORPORATED EXCEPT PURSUANT TO A WRITTEN AGREEMENT


<PAGE>

         SECTION 5.3.  TERMINATION FOR CONVENIENCE

         PRICELINE may terminate this Agreement at any time during the Initial
Term and any Renewal Term without cause upon at least ninety (90) days written
notice to CALLTECH. In such event, PRICELINE shall pay an early termination fee
to CALLTECH to compensate CALLTECH for all costs and expenses actually and
reasonably incurred by CALLTECH for personnel and equipment engaged in providing
Services to PRICELINE at the time of termination until such resources are either
discharged or re-deployed by CALLTECH to provide services for other parties (but
in any event for a period not to exceed sixty (60) days after termination).
CALLTECH will promptly and in good faith attempt to re-deploy such resources as
soon after termination as possible so as to reduce the amount of such early
termination fee payable by PRICELINE to the extent reasonably possible. In no
event shall the total amount of such termination fee exceed the amount billed to
PRICELINE for the Services (excluding any Related Services) provided in the
month immediately preceding the giving of the notice of termination by
PRICELINE.

                                   ARTICLE 6.
                 INDEMNITY; LIABILITY AND DISCLAIMERS; INSURANCE

         SECTION 6.1.  INDEMNIFICATION BY CALLTECH

         Subject to the limitations of liability set forth in Section 6.3.2 of
this Agreement, CALLTECH agrees to indemnify and save harmless PRICELINE and its
affiliates, and their respective officers, directors, shareholders, members,
partners, employees, agents and other personnel, from any liabilities, causes of
action, lawsuits, penalties, damages, claims or demands (including the costs and
expenses and reasonable attorneys' fees on account thereof) that may be made:
(i) by any person or entity for injuries or damages of any kind or nature
(including but not limited to personal injury, death, property damage and theft)
resulting from or relating to (x) the negligent or willful acts or omissions of
CALLTECH, those of persons or entities furnished by CALLTECH, or CALLTECH's
employees, CSRs, agents or subcontractors, (y) the use of CALLTECH's Services
furnished hereunder, (ii) CALLTECH's breach of this Agreement or its failure to
perform any obligation hereunder, or (iii) by any employee or former employee of
CALLTECH or any of its CSRs, agents or subcontractors for which CALLTECH's
liability to such person or entity would otherwise be subject to payments under
state workers' compensation or similar laws. CALLTECH, at its own expense,
agrees to defend PRICELINE, at PRICELINE's request, against any such liability,
cause of action, lawsuit, penalty, claim, damage or demand. PRICELINE agrees to
notify CALLTECH promptly of any written claims or demands against PRICELINE for
which CALLTECH is responsible hereunder. The foregoing indemnity shall be in
addition to any other indemnity obligations of CALLTECH set forth in this
Agreement.


                                      -9-


                             PRIVATE/PROPRIETARY
                             -------------------
     CONTAINS PRIVATE AND/OR PROPRIETARY INFORMATION. MAY NOT BE USED OR
      DISCLOSED OUTSIDE PRICELINE.COM LLC AND CALLTECH COMMUNICATIONS,
             INCORPORATED EXCEPT PURSUANT TO A WRITTEN AGREEMENT


<PAGE>

         SECTION 6.2.  INDEMNIFICATION BY PRICELINE

         Subject to the limitations of the liability provisions of Section 6.3.2
of this Agreement, provided that CALLTECH cooperates with PRICELINE, PRICELINE
agrees to indemnify and hold CALLTECH and its affiliates, and their respective
officers, directors, shareholders, members, partners, employees, agents and
other personnel, harmless from any loss, liability, damages or costs based on
the operations of any Products or any infringement by the Products of any patent
or proprietary right of a third party. CALLTECH agrees to notify PRICELINE
promptly of any written claims or demands against CALLTECH for which PRICELINE
is responsible hereunder. PRICELINE shall have no liability for, and CALLTECH
shall indemnify and hold PRICELINE and its affiliates, and their respective
officers, directors, shareholders, members, partners, employees, agents and
other personnel, harmless from and against, any claim based upon CALLTECH's
conduct, if such infringement, cause of action or other damage would have been
avoided but for that conduct.

         SECTION 6.3.  WARRANTY; LIMITATION OF LIABILITY

         6.3.1.   CALLTECH warrants to PRICELINE that the Services furnished 
under this Agreement will be furnished in a professional and workmanlike 
manner and in conformance with the metrics set forth in this Agreement.

         6.3.2.   Except for liabilities described in clauses (i) and (ii) 
below, CALLTECH's and PRICELINE's total liability hereunder will be limited to 
a maximum amount of FIVE MILLION DOLLARS ($5,000,000.00). The limitations of 
this Section shall not apply to: (i) any damage or loss to PRICELINE arising 
from any misappropriation of PRICELINE's confidential information in breach of 
this Agreement or (ii) damages resulting from personal injury or death or 
damage to tangible real or personal property caused by CALLTECH or resulting 
from CALLTECH's negligence.

         SECTION 6.4.  INSURANCE

         CALLTECH currently maintains at its sole cost and expense worker's
compensation insurance as required by applicable law, general liability
insurance with limits of not less than $1,000,000 bodily injury per occurrence
(including death) and $500,000 property damage per occurrence. In addition, CALL
TECH currently maintains automobile liability insurance with a limit of not less
than $1,000,000 bodily injury (including death) per occurrence. CALLTECH
currently maintains Contractual Liability coverage to cover liability assumed
under this Agreement. At all times under this Agreement CALLTECH shall maintain
appropriate insurance coverages or that which is required by law for a business
of like kind. CALLTECH shall provide PRICELINE with 


                                      -10-


                             PRIVATE/PROPRIETARY
                             -------------------
     CONTAINS PRIVATE AND/OR PROPRIETARY INFORMATION. MAY NOT BE USED OR
      DISCLOSED OUTSIDE PRICELINE.COM LLC AND CALLTECH COMMUNICATIONS,
             INCORPORATED EXCEPT PURSUANT TO A WRITTEN AGREEMENT


<PAGE>

copies of certificates of such insurance from time to time during the Term 
upon request by PRICELINE.

                                   ARTICLE 7.
                               GENERAL PROVISIONS

         SECTION 7.1.  NON-DISCLOSURE

         7.1.1.   As used in this Section 7.1, "Confidential Information" means
private, confidential, trade secret or other proprietary information (whether or
not embodied or contained in some tangible form) relating to any actual or
anticipated business of PRICELINE or CALLTECH, as applicable, and their
respective affiliates, or any information which, if kept secret, will provide
the party disclosing such Confidential Information (in each case a "Discloser")
an actual or potential economic advantage over others in the relevant trade or
industry. As defined herein, Confidential Information includes, without
limitation, formulae, compilations, computer programs and files, devices,
methods, techniques, know-how, inventions, research and development, business
data (including cost data), strategies, methods, prospects, plans and
opportunities, customer lists, marketing plans, specifications, financial
information, invention disclosures, patent applications (whether abandoned or
not), techniques, products and services of the Discloser and identified orally
or in writing by the Discloser as confidential, proprietary or trade secret
information. Confidential Information further includes any information or
material received in confidence by the Discloser from a third party, and/or
information held in confidence by a third party and made available to the party
receiving Confidential Information (in each case a "Recipient").

         7.1.2.   Except as required in the performance of its obligations under
this Agreement or with the prior written authorization of the Discloser, the
Recipient shall not directly or indirectly use, disclose, disseminate or
otherwise reveal any Confidential Information and shall maintain Confidential
Information in confidence for a period of five (5) years from the date of
termination or expiration of this Agreement, for whatever reason. Recipient
shall use the same care and discretion to protect Confidential Information of
the Discloser as Recipient uses to protect its own confidential information, but
not less than a reasonable standard of care. Recipient shall restrict use of the
Discloser's Confidential Information to its employees, and to those consultants
who have been pre-approved in writing by Discloser, who have a need to know the
Confidential Information and who have a written agreement with Recipient
sufficient to comply with this Agreement.

         7.1.3.   Nothing contained in this Section 7.1 shall in any way 
restrict Recipient's rights to use, disclose, or otherwise dispose of any 
information which:


                                      -11-


                             PRIVATE/PROPRIETARY
                             -------------------
     CONTAINS PRIVATE AND/OR PROPRIETARY INFORMATION. MAY NOT BE USED OR
      DISCLOSED OUTSIDE PRICELINE.COM LLC AND CALLTECH COMMUNICATIONS,
             INCORPORATED EXCEPT PURSUANT TO A WRITTEN AGREEMENT


<PAGE>

                  (a)  At the time of disclosure by Discloser was already in the
possession of Recipient (provided such information had not been previously
furnished to Discloser by Recipient), as shown by a written record;

                  (b)  Is independently made available to Recipient by an
unrelated and independent third party whose disclosure does not constitute a
breach of any duty of confidentiality owed to Discloser;

                  (c)  Is generally available to the public in a 
readily-available document; or

                  (d)  Is compelled to be disclosed pursuant to a court order,
provided that Discloser shall first have the opportunity to request an
appropriate protective order.

         7.1.4.   Nothing in this  Agreement  shall be  construed  as granting 
any rights or licenses in any Confidential Information to any person or entity.

         7.1.5.   Upon termination or expiration of this Agreement for any 
reason whatsoever, PRICELINE and CALLTECH shall leave with or return to the 
other all documents, records, notebooks, computer files, and similar 
repositories or materials containing Confidential Information of the other 
party and such other party's affiliates, including any and all copies thereof.

         7.1.6.   CALLTECH and PRICELINE agree that the terms of this Section 
7.1 are reasonable and necessary to protect their respective business 
interests and that the other party would suffer irreparable harm from a breach 
of this Section 7.1. Thus, in addition to any other rights or remedies, all of 
which shall be deemed cumulative, CALLTECH and PRICELINE and/or their 
respective affiliates, as applicable, shall be entitled to obtain injunctive 
relief to enforce the terms of this Section 7.1.

         SECTION 7.2.  INTELLECTUAL PROPERTY

         7.2.1.   CALLTECH agrees to disclose and furnish promptly to 
PRICELINE any and all technical information, computer or other apparatus 
programs, inventions, specifications, drawings, records, documentation, works 
of authorship or other creative works, ideas, knowledge or data, written, oral 
or otherwise expressed, first made or created for and paid for by PRICELINE 
under this Agreement (hereinafter "Work Product"). The Work Product 
specifically includes, without limitation, any scripts, lists of frequently 
asked questions and responses thereto, etc., prepared and utilized by CALLTECH 
in connection with providing Services regarding the Products.

         7.2.2.   Subject to the provisions of this Section 7.2.2, CALLTECH 
agrees to assign and does hereby assign to PRICELINE all right, title and 
interest in and to any Work 


                                      -12-


                             PRIVATE/PROPRIETARY
                             -------------------
     CONTAINS PRIVATE AND/OR PROPRIETARY INFORMATION. MAY NOT BE USED OR
      DISCLOSED OUTSIDE PRICELINE.COM LLC AND CALLTECH COMMUNICATIONS,
             INCORPORATED EXCEPT PURSUANT TO A WRITTEN AGREEMENT


<PAGE>

Product. To the extent such Work Product qualifies as a "work made for hire", 
it shall be deemed to be such. Notwithstanding the foregoing, (i) CALLTECH 
retains for itself a perpetual, nonexclusive, royalty-free, unrestricted right 
and license to any structure, architectures, ideas and concepts subsisting in 
such Work Product, and (ii) CALLTECH shall be free to independently develop 
software and other works similar to any works developed by the performance of 
the Services under this Agreement, whether by other employees of CALLTECH, in 
collaboration with third parties, or for other customers.

         7.2.3.   CALLTECH agrees to take all reasonable steps, at PRICELINE's 
expense, to assist PRICELINE in the perfection of the rights assigned 
hereunder.

         7.2.4.   CALLTECH shall not acquire any right to any tradename,
trademark, servicemark, copyright, patent or other form of intellectual property
of PRICELINE. CALLTECH shall not use such intellectual property of PRICELINE in
any manner except in the performance of its obligations hereunder as permitted
or contemplated in connection therewith.

         SECTION 7.3.  SEVERABILITY; WAIVER

         If any of the provisions of this Agreement a shall be held invalid or
unenforceable by reason of the scope or duration thereof or for any other
reason, such invalidity or unenforceability shall attach only to the particular
aspect of such provision found invalid or unenforceable and shall not affect any
other any other provision of this Agreement. To the fullest extent permitted by
law, this Agreement shall be construed as if the scope or duration of such
provision had been more narrowly drafted so as not to be invalid or
unenforceable.

         SECTION 7.4.  NO OTHER AGREEMENTS

         The parties acknowledge having read this Agreement and agree to be
bound by its Terms. This Agreement and the Schedules attached hereto and
supersedes and replaces any existing agreement, written or otherwise, entered
into between or among PRICELINE and CALLTECH relating to the subject matter
hereof except that the provisions of that certain Nondisclosure Agreement, dated
December 19, 1997, between PRICELINE and CALLTECH, shall remain in full force
and effect as it relates to the exchange of information between the parties from
the date of such Nondisclosure Agreement through the date of this Agreement.


                                      -13-


                             PRIVATE/PROPRIETARY
                             -------------------
     CONTAINS PRIVATE AND/OR PROPRIETARY INFORMATION. MAY NOT BE USED OR
      DISCLOSED OUTSIDE PRICELINE.COM LLC AND CALLTECH COMMUNICATIONS,
             INCORPORATED EXCEPT PURSUANT TO A WRITTEN AGREEMENT


<PAGE>

         SECTION 7.5.  ASSIGNABILITY

         This Agreement shall not be assigned by either party without the prior
written consent of the other party, which shall not be unreasonably withheld or
delayed, except that PRICELINE may assign this Agreement or any of its rights
and responsibilities hereunder, in whole or in part, to any affiliate or any
entity which acquires all or substantially all of the assets or operations of
its Internet-related services business dealing with the Products, with notice to
but without the consent of CALLTECH. Any such attempted assignment lacking
consent where required shall be null and void.

         SECTION 7.6.  GOVERNING LAW

         This Agreement shall be governed by and construed in accordance with
the laws of the State of Ohio, with regard to its choice of law provisions.

         SECTION 7.7.  FORCE MAJEURE; DISASTER RECOVERY

         Each party shall be released from and shall have no liability for any
failure beyond its reasonable control, including, but not limited to, acts of
God, labor troubles, strikes, lockouts, severe weather, delay or default of
utilities or communications companies or accidents.

         SECTION 7.8.  INDEPENDENT CONTRACTOR

         With respect to all matters relating to this Agreement, CALLTECH shall
be deemed to be an independent contractor. CALLTECH shall not represent itself
or its organization as having any relationship to PRICELINE other than that of
an independent agent for the limited purposes described in this Agreement.

         SECTION 7.9.  AUTHORIZED REPRESENTATIVES

         CALLTECH shall designate and maintain at all times hereunder a project
manager to serve as a single point of contact for PRICELINE to assist in the
resolution of all technical, operational and implementation-related matters.
CALLTECH shall endeavor not to change such project manager without PRICELINE's
approval, and in any event shall notify PRICELINE of any such changes. In
addition, each party shall, at all times, designate one representative who shall
be authorized to take any and all action and/or grant any approvals required in
the course of performance of this Agreement. Such representations shall be fully
authorized to act for and bind such party including the approval of amendments
to this Agreement. Until written notice to the contrary (as delivered in
accordance with Section 7.9), the authorized representatives of the parties are
as follows:


                                      -14-


                             PRIVATE/PROPRIETARY
                             -------------------
     CONTAINS PRIVATE AND/OR PROPRIETARY INFORMATION. MAY NOT BE USED OR
      DISCLOSED OUTSIDE PRICELINE.COM LLC AND CALLTECH COMMUNICATIONS,
             INCORPORATED EXCEPT PURSUANT TO A WRITTEN AGREEMENT


<PAGE>

         For PRICELINE:                     For CALLTECH:

         Ginny L. Taylor                    Robert J. Massey
         Priceline.com LLC                  CallTech Communications
         5 High Ridge Park                  Incorporated
         Stamford, CT 06905-1326            4189 ArlingGate Lane
                                            Columbus, OH 43228

         SECTION 7.10. NOTICES

         Any notice required or permitted hereunder shall be deemed sufficient
if given in writing and delivered personally, by facsimile transmission, by
reputable overnight courier service or United States mail, postage prepaid, to
the addresses shown below or to such other addresses as are specified by similar
notice, and shall be deemed received upon personal delivery, upon confirmed
facsimile receipt, two (2) days following deposit with such courier service, or
three (3) days from deposit in the United States mails, in each case as herein
provided:

         If to PRICELINE:                   If to CALLTECH:

         Priceline.com LLC                  CallTech Communications
         5 High Ridge Park                  Incorporated
         Stamford, CT 06905-1326            4189 ArlingGate Lane
         Attention:  Jesse Fink             Columbus, OH 43228
                                            Attention:  Robert J. Massey

         Phone:  203-705-3025               Phone:  614-621-5514
         Fax:  203-595-8264                 Fax: 614-461-5626


                                      -15-


                             PRIVATE/PROPRIETARY
                             -------------------
     CONTAINS PRIVATE AND/OR PROPRIETARY INFORMATION. MAY NOT BE USED OR
      DISCLOSED OUTSIDE PRICELINE.COM LLC AND CALLTECH COMMUNICATIONS,
             INCORPORATED EXCEPT PURSUANT TO A WRITTEN AGREEMENT


<PAGE>

         With a Copy to:                    With a Copy to:

         Jeff Brandt, Esq.                  C.J. Pettiti
         Priceline.com LLC                  CallTech Communications Incorporated
         5 High Ridge Park                  4189 ArlingGate Lane
         Stamford, CT 06905-1326            Columbus, OH 43228
         Phone:  203-705-3011               Phone:  614-621-5512
         Fax:  203-595-8264                 Fax:  614-461-5626

         A party may change its address and the name of its designated recipient
of copies of notices for purposes of this Agreement by giving the other parties
written notice of the new name and the address, phone and facsimile number of
its designated recipient in accordance with this Section 7.9.

         SECTION 7.11. REPRESENTATIONS

         Except as noted herein, no employee, agent or representative of 
either party will have the authority to bind the other party to any 
representation, oral or written, or any warranty concerning the Services or 
the performance of the Services.

         SECTION 7.12. ARBITRATION

         Any disputes or controversy, which this Agreement expressly provides 
to be resolved by arbitration, shall be settled by arbitration in accordance 
with the Center for Public Resources Rules for Non-Administered Arbitration of 
Business Disputes. The parties shall each select an arbitrator sufficiently 
knowledgeable in the areas of law necessary to arbitrate the controversy, and 
the two (2) arbitrators selected will select a third arbitrator (collectively, 
the "Arbitration Panel"). The Arbitration Panel shall arbitrate the 
controversy by majority decision. The United States Arbitration Act, 9 U.S.C., 
shall govern the arbitration, and any court having jurisdiction thereof may 
enter judgment upon 


                                      -16-


                             PRIVATE/PROPRIETARY
                             -------------------
     CONTAINS PRIVATE AND/OR PROPRIETARY INFORMATION. MAY NOT BE USED OR
      DISCLOSED OUTSIDE PRICELINE.COM LLC AND CALLTECH COMMUNICATIONS,
             INCORPORATED EXCEPT PURSUANT TO A WRITTEN AGREEMENT


<PAGE>

the majority decision rendered by the Arbitration Panel. The Arbitration Panel 
is not empowered to award damages in excess of actual damages, including 
punitive damages. The Arbitration Panel shall determine issues for resolution 
but may not limit, expand or otherwise modify the terms of the Agreement. The 
Arbitration Panel is not empowered to act or make any award other than an 
award based solely on the rights and obligations of the parties prior to any 
termination of this Agreement. Each party shall bear its own costs and 
expenses of the arbitration, except that the parties will share equally the 
compensation and expenses of the Arbitration Panel. This requirement for 
arbitration does not constitute a waiver of any right of termination under 
this Agreement. A request to a court for interim measures shall not waive the 
obligation to arbitrate. The parties, their representatives, other 
participants and the Arbitration Panel shall hold in confidence the existence, 
content and result of the arbitration.

         SECTION 7.13. COMPLIANCE WITH LAWS

         CALLTECH shall comply with the provision of all applicable federal, 
state, county and local laws, ordinances, regulations, and codes including, 
but not limited to, CALLTECH's obligations as an employer with regard to the 
health, safety and payment of its employees, and identification and 
procurement of required permits, certificates, approvals, and inspections in 
CALLTECH's performance of this Agreement. Notwithstanding whether a 
specification is furnished, if software, software products and services, or 
containers furnished are required to be constructed, packaged, labeled, or 
registered in a prescribed manner, CALLTECH shall comply with federal law and 
applicable state or local law. CALLTECH shall indemnify PRICELINE for, and 
defend PRICELINE against, any loss or damage sustained because of CALLTECH's 
noncompliance.

         SECTION 7.14. RIGHT OF ACCESS

         CALLTECH shall permit reasonable access for PRICELINE to its facilities
in connection with work hereunder. No charge shall be made for such visits.

         IN WITNESS WHEREOF, the parties hereto have signed this Master
Agreement Technical Support Outsourcing effective as of the date set forth on
the first page hereof.


                                      -17-


                             PRIVATE/PROPRIETARY
                             -------------------
     CONTAINS PRIVATE AND/OR PROPRIETARY INFORMATION. MAY NOT BE USED OR
      DISCLOSED OUTSIDE PRICELINE.COM LLC AND CALLTECH COMMUNICATIONS,
             INCORPORATED EXCEPT PURSUANT TO A WRITTEN AGREEMENT


<PAGE>

CALLTECH COMMUNICATIONS,                     PRICELINE.COM LLC
INCORPORATED

By:                                          By:                               
   -------------------------------              -------------------------------
Name:                                        Name:                             
     -----------------------------                -----------------------------
Title:                                       Title:                            
      ----------------------------                 ----------------------------


                                      -18-


                             PRIVATE/PROPRIETARY
                             -------------------
     CONTAINS PRIVATE AND/OR PROPRIETARY INFORMATION. MAY NOT BE USED OR
      DISCLOSED OUTSIDE PRICELINE.COM LLC AND CALLTECH COMMUNICATIONS,
             INCORPORATED EXCEPT PURSUANT TO A WRITTEN AGREEMENT


<PAGE>

                                   SCHEDULE A
                                   ----------



                      INBOUND TELESERVICING SPECIFICATIONS
                      ------------------------------------



PROGRAM DESCRIPTION: PRICELINE will be processing airline-ticketing transactions
requiring a highly qualified service bureau to accept calls from Customers,
answer general Product-related questions, and make any Customer requested travel
itinerary changes.

CALL OBJECTIVE:  To service Customers who have already purchased airline 
tickets through the Site.

LAUNCH: It is estimated that the launch date for the Inbound Teleservices 
shall be April 20, 1998. However, the parties agree that such launch date may 
be extended by PRICELINE for up to an additional four (4) weeks thereafter. 
The actual launch date applicable to the Inbound Teleservices is hereinafter 
referred to as the "Teleservices Launch Date". PRICELINE will provide 
reasonable advance notice of the actual Teleservices Launch Date once it is 
determined by PRICELINE.

CALL HANDLING:  The call flow will be as follows:

o    Initially calls with be handled by a VRU that will collect various pieces
     of information as determined by PRICELINE.

o    The calls will then be transferred to CALLTECH where the transaction will
     be completed by a CALLTECH customer service representative ("CSR").

o    Calls will be first handled by a VRU that PRICELINE owns which will collect
     information to complete the call. Screen pops and/or whispers will be
     available after the Teleservices Launch Date after technical compatibility
     is established.

o    The location of the VRU is to be determined by PRICELINE.  It may reside at
     PRICELINE facilities or at the CALLTECH Facility.

o    After the VRU portion of the call, CALLTECH will receive the call through 
     CALLTECH's ACD.

o    The connection from CALLTECH to PRICELINE's computer sales system will be 
     through PRICELINE's server. PRICELINE's server may be located either at 
     CALLTECH's Facility or remotely with a frame relay hookup to CALLTECH's PC 
     network.

TRAINING AND CSRS: PRICELINE will be heavily involved in training CSRs.
PRICELINE will have several scripted call flows that CSRs will follow. CSR
training will 


                             PRIVATE/PROPRIETARY
                             -------------------
     CONTAINS PRIVATE AND/OR PROPRIETARY INFORMATION. MAY NOT BE USED OR
      DISCLOSED OUTSIDE PRICELINE.COM LLC AND CALLTECH COMMUNICATIONS,
             INCORPORATED EXCEPT PURSUANT TO A WRITTEN AGREEMENT


<PAGE>

be 5-10 working days. All CSRs utilized for Inbound Teleservices will be 
dedicated PRICELINE CSRs and will be Worldspan qualified. CALLTECH will 
provide a minimum of 3 fully trained and dedicated CSRs per shift commencing 
on the Teleservices Launch Date except that on the Saturday and Sunday 12 p.m. 
to 6 p.m. Eastern Standard Time shifts, a minimum of only 2 fully trained and 
dedicated CSRs are required.

o    The CSRs will answer general post sale questions.
o    The CSRs will make any Customer requested travel itinerary changes and must
     be Worldspan qualified.

QUALITY ASSURANCE: An extensive monitoring program will be implemented.
PRICELINE will perform remote CSR monitoring at least weekly, and on-site
monitoring at least monthly. CALLTECH will maintain a CSR/supervisor ratio of 10
to 1 for this program during the initial stages of implementation, which shall
not be for a period of less than three (3) months. CALLTECH will monitor at
least 10 calls per CSR per month. All sales will have a tape recorded sales
verification script that must be read verbatim. CALLTECH must retain recorded
verifications for 1 year and retrieve verifications within 24 hours of
PRICELINE's request. PRICELINE will also survey Customers via outbound telephone
survey and by mail. PRICELINE will staff one full time person at the CALLTECH
Facility immediately and will have the right to provide additional staff at the
Facility as it determines is reasonably necessary.

VRU CAPABILITY: PRICELINE plans to develop the front end VRU prompter
capability. CALLTECH can provide this capability should PRICELINE wish to have
CALLTECH handle this responsibility. CALLTECH will maintain a VRU to capture
calls from the PRICELINE VRU.

OTHER REQUIREMENTS: CALLTECH will maintain a reliable PC network interconnected
by Ethernet network to a server on site, or to a server off site. If the server
is off-site, PRICELINE will provide a telecommunications connection.


                                      -2-


                             PRIVATE/PROPRIETARY
                             -------------------
     CONTAINS PRIVATE AND/OR PROPRIETARY INFORMATION. MAY NOT BE USED OR
      DISCLOSED OUTSIDE PRICELINE.COM LLC AND CALLTECH COMMUNICATIONS,
             INCORPORATED EXCEPT PURSUANT TO A WRITTEN AGREEMENT


<PAGE>

                                   SCHEDULE B
                                   ----------



                         INBOUND TELEMARKETING SERVICES
                         ------------------------------




PRICELINE PROGRAM DESCRIPTION: PRICELINE will be offering airline-ticketing
concierge services requiring a highly qualified service bureau to accept inbound
calls from Customers, answer Product-related questions and complete PRICELINE
Ticket Requests (a "PTR").

CALL OBJECTIVE:  To service Customers using the PRICELINE Toll-free Number for 
PTRs and to complete airline ticket transactions.

LAUNCH:  April 6, 1998 (the "Telemarketing Launch Date").

CALL HANDLING:  The call flow will be as follows:

o    The calls will be first handled by a CALLTECH VRU that will provide a brief
     explanation of the service and collect various pieces of information,
     including credit card information.
o    The calls will then be transferred to CALLTECH CSR where the transaction 
     will be completed.

TRAINING AND CSRS: PRICELINE will be heavily involved in training CSRs.
PRICELINE will provide several scripted call flows that CSRs will follow.
Training will be three (3) days with all CSRs being "web qualified." All CSRs
for Inbound Telemarketing will be dedicated PRICELINE CSRs except that CSRs may
be shared from 12 a.m. to 6 a.m. during each service day. CALLTECH will provide
ten (10) dedicated CSRs per shift commencing on the Telemarketing Launch Date
for the first thirty (30) days following the Telemarketing Launch Date.
Thereafter, PRICELINE and CALLTECH will agree to any adjustments in the number
of such CSRs from time to time during the Term to ensure the prompt delivery of
quality Services.

QUALITY ASSURANCE: An extensive monitoring program will be implemented.
PRICELINE will perform on-site and remote CSR monitoring at least weekly.
CALLTECH will provide PRICELINE with the capability to perform remote
monitoring. CALLTECH will maintain a CSR/supervisor ratio of 10 to 1 for this
program during the initial stages of 


                             PRIVATE/PROPRIETARY
                             -------------------
     CONTAINS PRIVATE AND/OR PROPRIETARY INFORMATION. MAY NOT BE USED OR
      DISCLOSED OUTSIDE PRICELINE.COM LLC AND CALLTECH COMMUNICATIONS,
             INCORPORATED EXCEPT PURSUANT TO A WRITTEN AGREEMENT


<PAGE>

implementation, which shall not be for a period of less than three (3) months. 
CALLTECH will monitor at least 10 calls per CSR per month. CALLTECH will 
record Customer request verification and credit card submissions for one (1) 
year and retain retrieved recorded items within 24 hours of PRICELINE's 
request. Customer PTRs are expected to be 7-12 minutes in duration. Contract 
fulfillment is the call objective. CALLTECH will work with PRICELINE to 
develop Frequently Asked Questions ("FAQ") interactive web based response 
capabilities for CSR answers to commonly asked questions.

VRU CAPABILITY: CALLTECH will provide the front end VRU capability.

OTHER REQUIREMENTS: CALLTECH will provide the capability to digitally record and
report credit card transactions, and bill calls to credit cards. All CALLTECH
CSR seats will have Pentium PC's with web connectivity.


                                      -2-


                             PRIVATE/PROPRIETARY
                             -------------------
     CONTAINS PRIVATE AND/OR PROPRIETARY INFORMATION. MAY NOT BE USED OR
      DISCLOSED OUTSIDE PRICELINE.COM LLC AND CALLTECH COMMUNICATIONS,
             INCORPORATED EXCEPT PURSUANT TO A WRITTEN AGREEMENT


<PAGE>

                                   SCHEDULE C
                                   ----------



                            CALLTECH SERVICE REPORTS
                            ------------------------




       ACD reports for each of the Inbound Teleservices and the Inbound
Telemarketing Services, on a daily basis, of program statistics including the
number of Inbound Calls answered, abandoned and percentage of calls answered in
thirty (30) seconds. This report will be provided (i) in one hour increments
with a day total, (ii) on a daylong basis by 9 a.m. Eastern Standard Time in
respect of the prior day's Services, (iii) weekly in daylong increments through
11:59 p.m. Eastern Standard Time of each Saturday, and (iv) monthly in daylong
increments through 11:59 p.m. Eastern Standard Time of the last day of each
month, and prior to the invoice of monthly fees by CALLTECH.

       ACD reports for each of the Inbound Teleservices and the Inbound
Telemarketing Services, on a daily basis, of CSR statistics including CSR name,
hours logged on ACD, the number of Inbound Calls handled, talk time, hold time,
after call work time, number of transfers and outbound calls. This report will
be provided (i) in one hour increments with a day total, (ii) on a daylong basis
by 9 a.m. Eastern Standard Time in respect of the prior day's Services, (iii)
weekly in daylong increments through 11:59 p.m. Eastern Standard Time of each
Saturday, and (iv) monthly in daylong increments through 11:59 p.m. Eastern
Standard Time of the last day of each month, and prior to the invoice of monthly
fees by CALLTECH.

       Monthly reports on other Services other than the Inbound Teleservices and
the Inbound Telemarketing Services prior to the invoice of such other Services
by CALLTECH.

       Daily, weekly and monthly CSR training reports, turnover reports, reason
reports and monitoring reports for each of the Inbound Teleservices and the
Inbound Telemarketing Services. The content of each report shall be mutually
agreed to by PRICELINE and CALLTECH.


                             PRIVATE/PROPRIETARY
                             -------------------
     CONTAINS PRIVATE AND/OR PROPRIETARY INFORMATION. MAY NOT BE USED OR
      DISCLOSED OUTSIDE PRICELINE.COM LLC AND CALLTECH COMMUNICATIONS,
             INCORPORATED EXCEPT PURSUANT TO A WRITTEN AGREEMENT


<PAGE>

                                   SCHEDULE D
                                   ----------



                            CALL CENTER CAPABILITIES
                            ------------------------

The Facility can seat 300 agents and has extensive capabilities including the
following:

SWITCHING PLATFORM:                              LOCAL AREA NETWORK:
BCS (Cortelco) DSP1000 Digital Switch            Windows NT 4.0

5000 port capacity                               Redundant Server/Mirroring

Advanced ACD System                              DLT Library Backup System

Built in Digital T1 Interface                    Firewalled Internet Link

AT&T ISDN Complaint                              10/100BT

Full Redundancy

Power Backup System

Supports and conforms to CTI standards


UNIX HOST - INTERNET SERVERS (5):                IVRU PLATFORM:
Unix Servers                                     Redundant 48 port system

Cisco 2501 routers                               Pentium based processors

Multiple T-1 connections to the Internet         Dialogic Voice Boards

Firewall (Livingston)                            Development with EASE


FAX SERVER:                                      CSR WORKSTATIONS CONFIGURATION:
486 Based Server                                 P100 or Higher Processors


                             PRIVATE/PROPRIETARY
                             -------------------
     CONTAINS PRIVATE AND/OR PROPRIETARY INFORMATION. MAY NOT BE USED OR
      DISCLOSED OUTSIDE PRICELINE.COM LLC AND CALLTECH COMMUNICATIONS,
             INCORPORATED EXCEPT PURSUANT TO A WRITTEN AGREEMENT


<PAGE>

Alcom Lan Fax Redirector Server                  16 MB or Greater of RAM

Digital T1 Interface to DSP1000                  Windows '95

GammaLink Fax Boards                             Connected to LAN

Each Facility supervisor has a master display screen that shows all the CSR's
that are signed on to the switch, the status of each CSR (available, talking,
on-break) and how long they have been in that particular status. The screen also
shows the supervisor performance levels for each CSR and the group as a whole.
The display also shows average call handling time, cumulative unavailable time
and number of calls handled by each agent. For the group, it shows the ASA, Max
Queue Delay, and Number of People in Queue and Service Level. Additional options
may be developed for unique requirements.

The Facility will have a SONET ring connection with a redundant self-healing
fiber optic telecommunications circuit, connected in two different points to the
Telco central offices. Power redundancy will be handled by an uninterruptible
power source (UPS) that will provide backup power in the event of an outage from
the local power company, American Electric Power. The CALLTECH center at
Columbus' German Village will be connected to the Facility via SONET ring
reducing the possibility of loss of service in the event of a major
telecommunications or power outage.


                                      -2-


                             PRIVATE/PROPRIETARY
                             -------------------
     CONTAINS PRIVATE AND/OR PROPRIETARY INFORMATION. MAY NOT BE USED OR
      DISCLOSED OUTSIDE PRICELINE.COM LLC AND CALLTECH COMMUNICATIONS,
             INCORPORATED EXCEPT PURSUANT TO A WRITTEN AGREEMENT


<PAGE>

                                   SCHEDULE E
                                   ----------



                           CALL-HANDLING REQUIREMENTS
                           --------------------------



SERVICE LEVELS:

                  So long as PRICELINE dictates the number of agents to be on 
                  duty handling incoming customer calls, PRICELINE will assume 
                  responsibility for managing service levels. The agree upon 
                  target is at least 80% of all calls will be answered within 
                  thirty (30) seconds.

                  So long as PRICELINE dictates the number of agents to be on 
                  duty, PRICELINE agrees to manage staffing levels such that 
                  100% of the E-mail Contacts referred by PRICELINE will be 
                  answered within 24 hours of CALLTECH's receipt. In the 
                  situation where CALLTECH is managing staff levels, CALLTECH 
                  agrees to answer 100% of the E-mail Contacts referred by 
                  PRICELINE within 24 hours of CALLTECH's receipt. E-mail 
                  response can be defined in three ways: 1) full response and 
                  closure; 2) response back requesting more information from 
                  the Customer to assist in clarifying the problem or to 
                  assist in the resolution of the problem; and 3) response 
                  stating that CALLTECH is researching the problem and will 
                  get back to the Customer by the end of the next business day 
                  (provided that CALLTECH does in fact get back to the 
                  Customer within such time frame).

CALL LENGTH:      The parties mutually anticipate an Average Actual Handling 
                  Time ("AAHT") of eight (8) minutes per call.  If the average 
                  exceeds such number of minutes for any monthly billing 
                  period, CALLTECH will promptly notify PRICELINE and 
                  cooperate with PRICELINE in adopting measures  reasonably 
                  calculated to reduce such average without requiring material 
                  additional expenses to be incurred by CALLTECH. If the AAHT 
                  begins to exceed such maximum number of minutes, or if the 
                  adoption of PRICELINE's Contact management system results in 
                  a material,  measurable increase in AAHT when compared to 
                  CALLTECH's  existing Contact management system, and the 
                  parties are unable to mutually agree on measures reasonably  
                  calculated to reduce such average or on a revised  maximum 
                  AAHT for the purposes of this


                             PRIVATE/PROPRIETARY
                             -------------------
     CONTAINS PRIVATE AND/OR PROPRIETARY INFORMATION. MAY NOT BE USED OR
      DISCLOSED OUTSIDE PRICELINE.COM LLC AND CALLTECH COMMUNICATIONS,
             INCORPORATED EXCEPT PURSUANT TO A WRITTEN AGREEMENT


<PAGE>

                  Section, then either party may terminate this Agreement 
                  (without payment of any early termination fees or other 
                  liability to the other party) upon at least ninety (90) days 
                  written notice to the other party.

ABANDON RATE:     CALLTECH agrees that the abandon rate shall not exceed 3% of 
                  total Inbound Calls, measured daily. So long as PRICELINE 
                  dictates the number of agents to be on duty handling 
                  incoming customer calls, PRICELINE will assume 
                  responsibility for managing to this service level.

PTR COMPLETION:   The parties mutually anticipate that CALLTECH shall sign 
                  up at least 25% of the Customers using the Toll-Free Number 
                  to make PTR's, as measured on a monthly basis commencing 
                  with the Teleservices Launch Date. The parties agree to 
                  renegotiate this expected level of service should the 
                  expected PTR completion rate prove to be unreasonable.


                                      -2-


                             PRIVATE/PROPRIETARY
                             -------------------
     CONTAINS PRIVATE AND/OR PROPRIETARY INFORMATION. MAY NOT BE USED OR
      DISCLOSED OUTSIDE PRICELINE.COM LLC AND CALLTECH COMMUNICATIONS,
             INCORPORATED EXCEPT PURSUANT TO A WRITTEN AGREEMENT


<PAGE>

                                   SCHEDULE F
                                   ----------



                                  CALLTECH FEES
                                  -------------



Unless otherwise specified, the fees set forth below apply to both the Inbound
Teleservices and the Telemarketing Services.

o    TRAINING:                       $150 per day (defined as seven (7) hours)
                                     per CSR

     CALLTECH will credit back to PRICELINE the aggregate amount of the 
     training fee for each CSR who terminates in the first two (2) weeks of 
     service following completion of the training program provided such 
     termination is not due to the lack of call volume.

     CALLTECH will reduce the training fee by 50% for each CSR who terminates 
     in week three (3) following completion of their training program.

     CALLTECH will provide PRICELINE with detailed reports of training rosters
     and retention.

o    CALL FEES FOR SERVICES:         1. Fixed fee of $25.00 per CSR hour for the
                                     first thirty (30) days following the 
                                     Telemarketing Launch Date.

                                     Thereafter, $27.00 per CSR hour

                                                        or

                                     Variable Rate Minute Structure as follows:


                             PRIVATE/PROPRIETARY
                             -------------------
     CONTAINS PRIVATE AND/OR PROPRIETARY INFORMATION. MAY NOT BE USED OR
      DISCLOSED OUTSIDE PRICELINE.COM LLC AND CALLTECH COMMUNICATIONS,
             INCORPORATED EXCEPT PURSUANT TO A WRITTEN AGREEMENT


<PAGE>

                                      MINUTES TALK + WRAP         FEE / MINUTE
                                      -------------------         ------------

                                      0 - 50,000                      $.70

                                      50,001 - 100,000                $.65

                                      100,001 - 200,000               $.60

                                      200,000 - 300,000               $.57

                                      300,000 +                       $.55


     The above per minute rates will be determined on an aggregated basis as 
     of the end of the last day of each month during the term of the 
     Agreement. After the first thirty (30) days following the Telemarketing 
     Launch Date, all call fees shall initially be the $27.00 hourly CSR agent 
     fee set forth above. PRICELINE, however, shall have the one-time option, 
     at any time during the Term of this Agreement (but at no time during the 
     thirty (30) days following the Telemarketing Launch Date), to convert to 
     payment as per the Variable Rate Minute structure set forth above by 
     providing written notice of such election to CALLTECH. Any such notice 
     shall be effective on the first day of the next month following 
     CALLTECH's receipt of such notice.

o    VRU FEES:                        MINUTES PER MONTH           FEE / MINUTE
                                      -----------------           ------------


                                      -2-


                             PRIVATE/PROPRIETARY
                             -------------------
     CONTAINS PRIVATE AND/OR PROPRIETARY INFORMATION. MAY NOT BE USED OR
      DISCLOSED OUTSIDE PRICELINE.COM LLC AND CALLTECH COMMUNICATIONS,
             INCORPORATED EXCEPT PURSUANT TO A WRITTEN AGREEMENT


<PAGE>

                                      0 - 50,000                      $.15

                                      50,001 - 100,00                 $.14

                                      100,001 - 150,000               $.13

                                      150,001 - 200,000               $.12

                                      200,001 - 250,000               $.11

                                      250,000 +                       $.10


o    E-MAIL:                          .50 cents per minute of CSR time








o    IMPLEMENTATION FEE:              $5,000 one time charge. CALLTECH 
                                      acknowledges its prior receipt of the 
                                      implementation fee from PRICELINE.


                                      -3-


                             PRIVATE/PROPRIETARY
                             -------------------
     CONTAINS PRIVATE AND/OR PROPRIETARY INFORMATION. MAY NOT BE USED OR
      DISCLOSED OUTSIDE PRICELINE.COM LLC AND CALLTECH COMMUNICATIONS,
             INCORPORATED EXCEPT PURSUANT TO A WRITTEN AGREEMENT


<PAGE>

     The implementation fee will be credited back to PRICELINE if the call 
     volume (talk + wrap) in the 60-90 day period following the Launch date 
     exceeds 30,000 minutes in the aggregate.

o    MONTHLY MINIMUM:                 $5,000 per month for all call fees, VRU 
                                      fees, E-mail fees and additional 
                                      development fees discussed below.

o    ADDITIONAL DEVELOPMENT:          $100 per hour for programmer/analyst 
                                      time for systems, programs or 
                                      applications development requested after 
                                      implementation.

     OFFICE                           SPACE $200 per month includes office space
                                      at CALLTECH's ArlingGate facility and 
                                      access to the Internet. Outbound long
                                      distance will be passed across 
                                      PRICELINE's T1 facilities.


                                      -4-


                             PRIVATE/PROPRIETARY
                             -------------------
     CONTAINS PRIVATE AND/OR PROPRIETARY INFORMATION. MAY NOT BE USED OR
      DISCLOSED OUTSIDE PRICELINE.COM LLC AND CALLTECH COMMUNICATIONS,
             INCORPORATED EXCEPT PURSUANT TO A WRITTEN AGREEMENT


<PAGE>

ADDENDUM NO. 1 TO THE PRICELINE.COM/CALLTECH MASTER AGREEMENT
- -------------------------------------------------------------

This Addendum No.1 (this "Addendum"), dated as of October __, 1998, modifies the
Master Agreement between priceline.com Incorporated and CallTech Communications,
Incorporated dated April 6, 1998 (the "Master Agreement"). All defined terms
used in this Addendum but not defined herein shall have the meanings set forth
in the Master Agreement. This Addendum shall supersede all provisions and terms
of the Master Agreement that are inconsistent or conflict with, or are otherwise
contrary to, any provision or term of this Addendum. For good and valuable
consideration, the receipt and sufficiency of which is hereby acknowledged, the
parties hereby agree that the Master Agreement amended as follows:

1.   PRICELINE CONVERSION:
     CallTech acknowledges and agrees that all references to "priceline.com LLC
     " or "priceline" in the Master Agreement shall, from and after July 31,
     1998, mean and refer to priceline.com Incorporated, a Delaware corporation
     and the successor in interest by merger to priceline.com LLC.

2.   SCHEDULE F - CALLTECH FEES AND RELATED CHARGES:
     CallTech acknowledges that priceline.com exercised its option set forth on
     Schedule F to the Master Agreement to covert its payment obligations to
     CallTech to the Variable Rate Minute Structure identified on Schedule F.
     Such conversion was effective as of August 1, 1998.

     The parties acknowledge and agree that the VRU and Network Prompter fees
     set forth in Schedule F have been modified to $ .06 per minute effective
     August 1, 1998. Such fees as modified shall remain in full force and effect
     so long as priceline.com continues utilizing CallTech for all currently
     operational VRU and Network Prompter services installed at CallTech.

     Effective as of the date of this Addendum, the CSR training fees set forth
     in Schedule F are hereby modified to include an option whereby CallTech
     will charge priceline.com $100 for each seven hour training day per CSR
     provided that the training is provided by priceline.com personnel. CallTech
     shall provide priceline.com detailed reports of training rosters, and a
     report of retention with each training invoice.

     Effective as of the date of this Addendum, office space fees at CallTech's
     current facility will be deemed included on Schedule F and will be
     available (at priceline.com's option) and charged to priceline.com at the
     rate of $200 per month per office, or at a fixed fee to be agreed upon by
     the parties. Any lease by priceline.com of space at CallTech's current
     facility may be terminated immediately and at any time by notice from
     priceline.com to CallTech. Priceline.com has committed to lease 890 square
     feet at a fixed rate of $1300 per month in CallTech's new Hilliard
     facility, scheduled to open on approximately January 1, 1999 (the "New


<PAGE>

     CallTech Facility"). Priceline.com may terminate its lease of space at the
     New CallTech Facility at any time upon 60 days prior notice to CallTech.

3.   CUSTOMER SERVICE SALARY:
     Effective as of the date of this Addendum, CallTech agrees to compensate
     each of its CSRs one additional dollar more than the standard priceline.com
     wage rate for agents, per labor hour worked, as an incentive to attract
     highly qualified individuals. In turn, priceline.com agrees to compensate
     CallTech an additional 2.6 cents per CSR labor minute over the standard
     rate to cover the salary increases paid to CallTech CSRs.

4.   VISA BONUS PROGRAM:
     To increase the rate of successful Visa credit card conversions by CallTech
     CSRs, priceline.com and CallTech will negotiate in good faith on terms and
     conditions for a CSR Visa conversion incentive program. The cost of such
     program shall be paid for by priceline.com.

5.   DISASTER PREVENTION:
     CallTech will use best efforts to ensure a safe and reliable call center,
     including providing an uninterruptible power source (UPS) for power backup,
     a diesel generator for additional power backup, and a backup call center
     site to be selected by CallTech and operational as soon as possible (but no
     later than January 31, 1999).

     Should priceline.com experience repeated and/or significant disruptions in
     service for any reason related to failures on the part of CallTech,
     CallTech agrees to remedy these disruptions within sixty days of written
     notice from priceline.com.

6.   YEAR 2000:
     CallTech will use best efforts to ensure the software used in conjunction
     with providing services to priceline.com will correctly handle the change
     of the century in a standard and compliant manner.

     Should such software fail due to changes in the calendar date from December
     31, 1999 to January 1, 2000, CallTech will mobilize all necessary and
     appropriate resources to rectify the problem in a timely manner at no
     additional cost to priceline.com.

7.   QUALITY ASSURANCE:
     CallTech will provide regular recorded monitoring on audiocassette at least
     three calls per CSR per week. CallTech will grade the first three completed
     calls taped for each CSR using a QA monitoring form developed by
     priceline.com. CallTech agrees to provide a weekly and monthly QA report
     documenting the CSR QA scores and coaching notes. Recorded phone calls will
     be graded by an equal number of CallTech and priceline.com employees. The
     average grade for all phone calls in a monthly period shall not fall below
     85%. Should this goal not be met, CallTech will work with priceline.com to
     arrive at a mutually agreed upon solution within thirty days of 


<PAGE>

     written notice from priceline.com. Such process will be modified as 
     reasonably deemed appropriate by priceline.com.

8.   SERVICE LEVEL AGREEMENT AND SCHEDULE E:
     The service level target for Operator Service and Customer Service as set
     forth in Schedule F to the Master Agreement shall continue to be as
     follows: 80% of all inbound calls during each monthly period will be
     answered within 30 seconds. Should this goal not be met, CallTech will work
     with priceline.com to arrive at a mutually agreed upon solution within
     thirty days of written notice from priceline.com.

     In addition, priceline.com agrees to provide CallTech with a rolling
     sixty-day call projection for each major inbound priceline.com
     telemarketing program at CallTech. Should the actual number of calls vary
     by greater than 10% of this forecast, the parties will negotiate in good
     faith on a new service level target.

     As a result of the transfer to the Variable Rate Minute Structure set forth
     in Section 2 of this Addendum, CallTech will manage CSR staffing levels
     effective August 1, 1998.

9.   HOURS OF OPERATION:
     Effective as of the date of this Addendum, Section 1.3 of the Master
     Agreement is hereby modified to reflect CallTech`s agreement to provide
     Teleservices to priceline.com during all hours requested by priceline.com
     so long as priceline.com provides CallTech with reasonable notice of
     changes to the normal operating hours.

10.  PAYMENT:
     Effective as of the date of this Addendum, Section 4.2 of the Master
     Agreement is hereby modified to require CallTech to deliver to
     priceline.com invoices bimonthly through the 15th and last day of each
     month during the Term. Priceline.com will pay net 14 days from the date of
     each invoice.

     THE PARTIES AGREE AND SIGN THIS ADDENDUM AS OF THE DATE SET FORTH ON THE
     FIRST PAGE OF THIS ADDENDUM. EXCEPT AS OTHERWISE AMENDED OR MODIFIED BY
     THIS ADDENDUM, ALL OTHER TERMS AND PROVISIONS OF THE MASTER AGREEMENT SHALL
     REMAIN IN FULL FORCE AND EFFECT.

     CALLTECH COMMUNICATIONS, INC.           PRICELINE.COM INCORPORATED

     BY:                                     BY:
        --------------------------              --------------------------

     NAME:                                   NAME:
          ------------------------                ------------------------

     TITLE:                                  TITLE:
           -----------------------                 -----------------------
     DATE:                                   DATE:
          ------------------------                ------------------------



<PAGE>


                                                                 Exhibit 10.16

                         COMMERCIAL PROMISSORY NOTE

THIS NOTE MAY NOT BE TRANSFERRED, SOLD, ASSIGNED, PLEDGED, ENCUMBERED, 
HYPOTHECATED OR OTHERWISE DISPOSED OF UNLESS SUCH TRANSFER, SALE, ASSIGNMENT, 
PLEDGE, ENCUMBRANCE, HYPOTHECATION OR OTHER DISPOSITION COMPLIES WITH THE 
PROVISIONS OF THE SUBSCRIPTION AGREEMENT DATED AS OF APRIL 1, 1998 (A COPY OF 
WHICH IS ON FILE WITH PRICELINE.COM LLC (TOGETHER WITH ITS SUCCESSORS, THE 
"COMPANY") AND WHICH SHALL BE MAILED TO THE HOLDER HEREOF WITHOUT CHARGE 
WITHIN FIVE DAYS AFTER RECEIPT BY THE COMPANY OF A WRITTEN REQUEST THEREFOR 
FROM SUCH HOLDER). IN ADDITION TO THE RESTRICTIONS ON TRANSFER SET FORTH OR 
REFERRED TO IN SUCH AGREEMENT, NO TRANSFER, SALE, ASSIGNMENT, PLEDGE, 
ENCUMBRANCE, HYPOTHECATION OR OTHER DISPOSITION OF THIS NOTE MAY BE MADE 
EXCEPT (A) PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT UNDER THE 
SECURITIES ACT OF 1933, AS AMENDED, AND THE RULES AND REGULATIONS IN EFFECT 
THEREUNDER (THE "ACT"), AND ALL APPLICABLE STATE SECURITIES OR "BLUE SKY" 
LAWS OR (B) IF SUCH TRANSFER, SALE, ASSIGNMENT, PLEDGE, ENCUMBRANCE, 
HYPOTHECATION OR OTHER DISPOSITION IS EXEMPT FROM THE PROVISIONS OF THE ACT 
AND, IF REQUIRED BY THE COMPANY, THE COMPANY HAS BEEN FURNISHED WITH AN 
OPINION OF COUNSEL FOR THE HOLDER, WHICH OPINION AND COUNSEL SHALL BE 
REASONABLY SATISFACTORY TO THE COMPANY, TO THAT EFFECT. THE HOLDER OF THIS 
NOTE, BY ACCEPTANCE HEREOF, AGREES TO BE BOUND BY ALL OF THE PROVISIONS OF 
THE AFORESAID AGREEMENT.

$ 1,000,000.00                                                 April 15, 1998

     For value received, PRICELINE.COM LLC (the "Company"), a Delaware 
Limited Liability Company with its principal offices located at Five High 
Ridge Park, Stamford, Connecticut 06905-1325 (the "Maker"), promises to pay 
to the order of ANDRE JAECKLE (the "Holder"), at CMC 8001 Centerview Parkway, 
Cordova, Tennessee 38018, or at such other place or places as the Holder 
hereof from time to time may designate in writing, the principal sum of One 
Million Dollars ($1,000,000.00), in lawful money of the United States, with 
interest thereon in like lawful money at a rate which is equal to six percent 
(6%) per annum (the "Effective Rate") calculated on the basis of a 365-day 
year for the actual number of days elapsed in arrears on the balance of this 
loan outstanding from time to time until the entire principal balance 
together with interest in areas has been fully paid. Interest only shall be 
payable semi-annually on the first day of April and October.

    Any principal balance outstanding under this Note together with interest 
at the Effective Rate, if not required to be paid sooner pursuant to the 
terms hereof, together with any other indebtedness due under this Note, shall 
become finally due and payable on April 15, 2003 (the "Maturity Date").


<PAGE>

     If a default shall occur under the terms of this Note and continue 
uncured for thirty (30) days after notice from the Holder to the Maker, the 
Holder may, at its option, declare the principal sum then remaining unpaid 
hereunder, together with all interest due and payable thereon, and all other 
sums owing hereunder, immediately due and payable without notice. From and 
after the Maturity Date, or from and after default and acceleration of the 
Maturity Date, or from and after any judgment, the entire principal remaining 
unpaid hereunder shall bear an annual interest rate equal to the Effective 
Rate plus two percent (2%). Failure to exercise such option or any other 
rights the Holder may be entitled to, shall not constitute a waiver of the 
right to exercise such option or any other rights in the event of any 
subsequent default, whether of the same or different nature.

     If this Note is placed in the hands of an attorney for collection or is 
collected through any legal proceeding, the undersigned promised to pay all 
costs, expenses and disbursements incurred in enforcing this Note, including 
reasonable attorney's fees and court costs.

     Notwithstanding any provisions of this Note, it is the understanding and 
agreement of the Maker and the Holder that the rate of interest to be paid by 
Maker to Holder shall not exceed the maximum rate of interest permissible to 
be charged by Holder under applicable law. All sums in excess of those 
lawfully collectible as interest for the periods in question shall be applied 
to principal immediately upon receipt of such moneys by the Holder.

     The Maker waives the rights of presentment, notice of protest, demand, 
dishonor and nonpayment of this Note, and consents to any and all renewals 
and extensions in the time of payment hereof. The right to plead any and all 
statutes of limitations as a defense to (i) any demand on this Note, and (ii) 
any and all obligations or liabilities arising out of or in connection with 
this Note, is expressly waived by the undersigned to the fullest extent 
permitted by law.

     The principal amount outstanding under this Note at any particular time 
may be prepaid in whole or in part at any time upon thirty (30) days prior 
written notice by Maker to Holder. Any prepayment so made shall not preclude 
subsequent prepayment. Any prepayment shall be applied first against 
permitted expenses of Holder as provided for herein, second to unpaid 
interest due under this Note and then to principal.

     This Note is issued pursuant to, and the Holder is entitled to the 
benefits of and is subject to the restrictions on transfer and other 
provisions of, that certain Subscription Agreement by and between the Maker 
and the Holder of event date herewith (the "Subscription Agreement"). All the 
terms, covenants, conditions, provisions and agreements of the Subscription 
Agreement are hereby made a part of this Note to the same extent and with the 
same effect as if fully set forth herein.

     Any notice to the undersigned or to the Holder provided for in this Note 
shall be given by delivering or by mailing such notice in accordance with the 
notice provisions of the Subscription Agreement.

     This Note may not be modified or terminated orally, but only by 
agreement in writing signed by the party against whom enforcement of such 
change or termination is sought.

     This Note is to be governed and construed according to the laws of the 
State of Connecticut.

     IN WITNESS WHEREOF, the undersigned as Maker has hereunto caused this 
Note to be duly executed as of the date first above written.

                                           PRICELINE COM LLC



Attest:                                    By:      /s/ Jay Walker
                                              ------------------------------
                                              Jay Walker, President

    /s/ Joseph L. Deyman
- -----------------------------


<PAGE>
                                                                  Exhibit 10.17




                                                                  Warrant No. 1

NEITHER THIS WARRANT NOR THE UNITS ISSUABLE UPON EXERCISE HEREOF MAY BE 
TRANSFERRED, SOLD, ASSIGNED, PLEDGED, ENCUMBERED, HYPOTHECATED OR OTHERWISE 
DISPOSED OF UNLESS SUCH TRANSFER, SALE, ASSIGNMENT, PLEDGE, ENCUMBRANCE, 
HYPOTHECATION OR OTHER DISPOSITION COMPLIES WITH THE PROVISIONS OF THE 
SUBSCRIPTION AGREEMENT DATED AS OF APRIL 1, 1998 (A COPY OF WHICH IS ON FILE 
WITH PRICELINE.COM LLC (TOGETHER WITH ITS SUCCESSORS, THE "COMPANY") AND WHICH 
SHALL BE MAILED TO THE HOLDER HEREOF WITHOUT CHARGE WITHIN FIVE DAYS AFTER 
RECEIPT BY THE COMPANY OF A WRITTEN REQUEST THEREFOR FROM SUCH HOLDER) AND 
THE LLC AGREEMENT REFERENCED THEREIN. IN ADDITION TO THE RESTRICTIONS ON 
TRANSFER SET FORTH OR REFERRED TO IN SUCH AGREEMENT, NO TRANSFER, SALE, 
ASSIGNMENT, PLEDGE, ENCUMBRANCE, HYPOTHECATION OR OTHER DISPOSITION OF THIS 
WARRANT OR THE UNITS ISSUABLE UPON EXERCISE HEREOF MAY BE MADE EXCEPT (A) 
PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 
1933, AS AMENDED, AND THEIR RULES AND REGULATIONS IN EFFECT THEREUNDER (THE 
"ACT"), AND ALL APPLICABLE STATE SECURITIES OR "BLUE SKY" LAWS OR (B) IF SUCH 
TRANSFER, SALE, ASSIGNMENT, PLEDGE, ENCUMBRANCE, HYPOTHECATION OR OTHER 
DISPOSITION IS EXEMPT FROM THE PROVISIONS OF THE ACT AND, IF REQUIRED BY THE 
COMPANY, THE COMPANY HAS BEEN FURNISHED WITH AN OPINION OF COUNSEL FOR THE 
HOLDER, WHICH OPINION AND COUNSEL SHALL BE REASONABLY SATISFACTORY TO THE 
COMPANY, TO THAT EFFECT. THE HOLDER OF THIS WARRANT, BY ACCEPTANCE HEREOF, 
AGREES TO BE BOUND BY ALL OF THE PROVISIONS OF THE AFORESAID AGREEMENTS.

                              PRICELINE.COM LLC

              (Organized under the laws of the State of Delaware)

        Void after 5:00 p.m., New York City time, on April 15, 2003

                  Warrant for the Purchase of 50,000 Units

     FOR VALUE RECEIVED, PRICELINE.COM LLC, a Delaware limited liability 
company (the "Company"), hereby certifies that

                    -------------ANDRE JAECKLE--------------

(the "Holder") is entitled, subject to the provisions of this warrant (the 
"Warrant"), to purchase from the Company, at any time, or from time to time 
during the period commencing at 9:00 a.m. New York City local time on April 15,
1998 (the "Base Date"), and expiring at 5:00 p.m. New York City

<PAGE>

local time on April 15, 2003 (the "Termination Date") up to FIFTY THOUSAND 
UNITS of the Company at a price of $1.00 per Unit (such exercise price per 
unit, as adjusted, being hereinafter referred to as the "Exercise Price").

The term "Unit" means the Units of the Company as constituted on the Base 
Date, together with any other equity securities that may be issued by the 
Company in addition thereto or in substitution therefor. The number of 
Units to be received upon the exercise of this Warrant may be adjusted from 
time to time as hereinafter set forth. The Units deliverable upon such 
exercise, and as adjusted from time to time, are hereinafter sometimes 
referred to as "Warrant Units".

        Upon receipt by the Company of evidence reasonably satisfactory to it 
of the loss, theft, destruction or mutilation of this Warrant, and (in the 
case of loss, theft or destruction) of reasonably satisfactory 
indemnification, and upon surrender and cancellation of this Warrant, if 
mutilated, the Company shall execute and deliver a new Warrant of like tenor 
and date.

        The Holder agrees with the Company that this Warrant is issued, and 
all the rights hereunder shall be paid, subject to all of the conditions, 
limitations and provisions set forth herein.

        1.  Exercise of Warrant.  This Warrant may be exercised in whole or 
in part at any time, or from time to time, during the period commencing at 
9:00 a.m. New York City local time, on the Base Date and expiring at 5:00 
p.m., New york City local time, on the Termination Date or if such day is a 
day on which banking institutions in the City of New York are authorized by 
law to close, then on the next succeeding day that shall not be such a day, by 
presentation and surrender hereof to the Company at its principal office with 
the Warrant Exercise Form attached hereto duly executed and accompanied by 
payment (either in cash or by certified or official bank check, payable to 
the order of the Company), of the Exercise Price for the number of Units 
specified in such Form and instruments of transfer, if appropriate, duly 
executed by the Holder or his or her duly authorized attorney. If this 
Warrant should be exercised in part only, the Company shall, upon surrender 
of this Warrant for cancellation, execute and deliver a new Warrant 
evidencing the rights of the Holder thereof to purchase the balance of the 
Units purchasable hereunder. Upon receipt by the Company of this Warrant, 
together with the Exercise Price, in proper form for exercise, the Holder 
shall be deemed to be the holder of record of the Units issuable upon such 
exercise, notwithstanding that the transfer books of the Company shall then 
be closed or that certificates representing such Units shall not then be 
actually delivered to the Holder. The Company shall pay any and all 
documentary stamp or similar issue or transfer taxes payable in respect of 
the issue or delivery of Units on exercise of this Warrant.

        2.  Reservation of Units. The Company will at all times reserve for 
issuance and delivery upon exercise of this Warrant  all Units or other 
equity securities of the Company (and other securities and property) from 
time to time receivable upon exercise of this Warrant. All such Units (and 
other securities and property) shall be duly authorized and, when issued upon 
such exercise, shall be validly issued, fully paid and nonassessable and free 
of all preemptive rights.

        3.  Restrictions Upon Transferability of Warrant and Warrant Stock: 
Transfer to Comply with the Securities Act of 1933 and the Subscription 
Agreement. Neither this Warrant nor the


                                    2


<PAGE>

Warrant Units issuable upon exercise of this Warrant have been registered 
under the Securities Act of 1933, as amended (the "Act"). Holders hereof and 
thereof shall be subject to such restrictions upon the sale or other 
disposition thereof, all as more fully set forth in or referred to in the 
Subscription Agreement of even date herewith between the Company and the 
Holder (the "Subscription Agreement") and the Limited Liability Company 
Agreement of the Company dated as of July 18, 1997 (as same may be amended, 
the "LLC Agreement"). The Subscription Agreement and the LLC Agreement are 
incorporated by reference as an integral part of this Warrant.

    4. Exchange, Transfer, Assignment of Loss of Warrant. This Warrant cannot 
be exchanged, transferred or assigned otherwise than in accordance with the 
provisions of the Subscription Agreement and the LLC Agreement. If the 
provisions of the Subscription Agreement are complied with, upon surrender of 
this Warrant to the Company with the Assignment Form annexed hereto duly 
executed and funds sufficient to pay any transfer tax, the Company shall, 
without charge, execute and deliver a new Warrant in the name of the heir, 
devisee or assignee named in such instrument of assignment and this Warrant 
shall promptly be cancelled.

     5. Rights of the Holder. The Holder shall not, by virtue hereof, be 
entitled to any rights of a Unitholder of the Company, either at law or in 
equity, and the rights of the Holder are limited to those expressed in this 
Warrant.

     6. Redemption. This Warrant is not redeemable by the Company.

     7. Adjustment of Exercise Price and Number and Kind of Securities 
Purchasable upon Exercise of Warrant.

        (a) Definitions. As used in this Agreement, the following terms have 
the following respective meanings:

            (i) "Options" means any right, option, or warrant to subscribe 
for, purchase, or otherwise acquire Units or Convertible Securities.

            (ii) "Convertible Securities" means any evidences of 
indebtedness, units or other securities directly or indirectly convertible 
into or exchangeable for Units.

            (iii) "Issue" means to grant, issue, sell assume, or fix a record 
date for determining persons entitled to receive, any security (including 
Options), whichever of the foregoing is the first to occur.

            (iv) "Additional Units" means all Units (including reissued 
Units) issued (or deemed to be issued pursuant to Section 7(b)) after the date 
of issuance of this Warrant.

        (b) Deemed Issuance of Additional Units. The Units issuable upon 
exercise of an Option (including the Units issuable upon conversion or 
exercise of a Convertible Security issuable pursuant to an Option) are deemed 
to be Issued when the Option is Issued. The Units ultimately issuable upon 
conversion or exercise of a Convertible Security (other than a Convertible 
Security



                                       3

<PAGE>

Issued pursuant to an Option) shall be deemed Issued upon issuance of the 
Convertible Security. The maximum amount of Units issuable is determined 
without regard to any future adjustments permitted under the instrument 
creating the Options or Convertible Securities.

          (c)  Adjustment of Exercise Price for Diluting Issuances.

               (i)    Weighted Average Adjustment. If the Company issues 
Additional Units after the date of this Agreement and the consideration per 
share of Additional Units (determined pursuant to Section 7(h)) is less than 
the Exercise Price in effect immediately before such Issue, the Exercise 
Price in effect immediately before such issue shall be reduced, concurrently 
with such Issue, to a price (calculated to the nearest cent) determined by 
multiplying the Exercise Price by a fraction:

                      (A)  the numerator of which is the number of Units 
outstanding immediately before such Issue plus the number of Units that the 
aggregate consideration received by the Company for such Additional Units 
would purchase at the Exercise Price in effect immediately before such Issue, 
and

                      (B)  the denominator of which is the number of Units 
outstanding immediately before such Issue plus the number of such Additional 
Units.

               (ii)   Adjustment of Number of Units. Upon each adjustment of 
the Exercise Price, the number of Units issuable upon exercise of this 
Warrant shall be increased to equal the quotient obtained by dividing (a) the 
product resulting from multiplying (i) the number of Units issuable upon 
exercise of this Warrant and (ii) the Exercise Price, in each case as in 
effect immediately before such adjustment, by (b) the adjusted Exercise Price.

               (iii)  Securities Deemed Outstanding. For the purpose of this 
Section 7(c), all securities issuable upon exercise of any outstanding 
Convertible Security or Options, warrants, or other rights to acquire 
securities of the Company shall be deemed to be outstanding.

          (d)  No Adjustment for Issuances Following Deemed Issuances. No 
adjustment to the Exercise Price shall be made upon the exercise of Options 
or conversion of Convertible Securities.

          (e)  Adjustment Following Changes in Terms of Options or 
Convertible Securities. If the consideration payable to, or the amount of 
Units Issuable by, the Company increases or decreases, respectively, pursuant 
to the terms of any outstanding Options or Convertible Securities, the 
Exercise Price shall be recomputed to reflect such increase or decrease. The 
recomputation shall be made as of the time of the issuances of the Options or 
Convertible Securities. Any changes in the Exercise Price that occurred after 
such issuance because Additional Units were issued or deemed Issued shall 
also be recomputed.

          (f)  Recomputation Upon Expiration of Options or Convertible 
Securities. The Exercise Price computed upon the original Issue of any 
Options or Convertible Securities, and any


                                       4


<PAGE>

subsequent adjustments based thereon, shall be recomputed when any Options or 
rights of conversion under Convertible Securities expires without having been 
exercised. In the case of Convertible Securities or Options for Units, the 
Exercise Price shall be recomputed as if the only Additional Units were the 
Units actually Issued upon the exercise of such securities, if any, and as if 
the only consideration received therefor was the consideration actually 
received upon the Issue, exercise or conversion of the Options or Convertible 
Securities. In the case of Options for Convertible Securities, the Exercise 
Price for this Warrant shall be recomputed as if the only Convertible 
Securities Issued were the Convertible Securities actually Issued upon the 
exercise thereof, if any, and as if the only consideration received therefor 
was the consideration actually received by the Company (determined pursuant 
to Section 7(i)), if any, upon the Issue of the Options for the Convertible 
Securities.

      (g) Limit on Readjustments. No readjustment of the Exercise Price for 
this Warrant pursuant to Section 7(e) or 7(f) shall increase the Exercise 
Price more than the amount of any decrease made in respect of the Issue of 
any Options or Convertible Securities.

      (h) Computation of Consideration. The consideration received by the 
Company for the Issue of any Additional Units shall be computed as follows:

          (i) Cash. Cash shall be valued at the amount of cash received by 
the Company, excluding amounts paid or payable for accrued interest or 
accrued dividends.

          (ii) Property. Property other than cash shall be computed at the 
fair market value thereof at the time of the Issue as determined in good faith 
by [the Board of Managers] of the Company.

          (iii) Mixed Consideration. The consideration for Additional Units 
Issued together with other property of the Company for consideration that 
covers both shall be determined in good faith by the Board of Managers of the 
Company.

          (iv) Options and Convertible Securities. The consideration per 
Additional Unit for Options and Convertible Securities shall be determined by 
dividing:

               (A) the total amount, if any, received or receivable by the 
Company for the Issue of the Options or Convertible Securities, plus the 
minimum amount of additional consideration (as set forth in the instruments 
relating thereto, without regard to any provision contained therein for a 
subsequent adjustment of such consideration) payable to the Company upon 
exercise of the Options or conversion of the Convertible Securities, by

              (B) the maximum amount of Units (as set forth in the 
instruments relating thereto, without regard to any provision contained 
therein for a subsequent adjustment of such number) ultimately Issuable upon 
the exercise of such Options or the conversion of such Convertible Securities.

      (i) Unit Distributions. In case at any time the Company shall declare a 
dividend 

                                       5

<PAGE>

or make any other distribution upon any Units of the Company which is payable 
in Unit or Convertible Securities, any Units or Convertible Securities, as 
the case may be, issuable in payment of such dividend or distribution shall 
be deemed to have been issued or sold without consideration.

     (j) Subdivision or Combination of Units. In case the Company shall at 
any time subdivide the outstanding Units into a greater number of Units, the 
Exercise Price in effect immediately prior to such subdivision shall be 
proportionately reduced and the number of Units issuable upon exercise of 
this Warrant immediately prior to such subdivision shall be proportionately 
increased, and conversely, in case the outstanding Units shall be combined at 
any time into a smaller number of Units, the Exercise Price in effect 
immediately prior to such combination shall be proportionately increased and 
the number of Units issuable upon exercise of this Warrant immediately prior 
to such combination shall be proportionately reduced.

     (k) Adjustments for Consolidation, Merger, Sale of Assets, 
Reorganization, etc. In case the Company (i) consolidates with or merges into 
any other entity and is not the continuing or surviving entity of such 
consolidation or merger, or (ii) permits any other entity to consolidate with 
or merge into the Company and the Company is the continuing or surviving 
Company but, in connection with such consolidation or merger, the Units are 
changed into or exchanged for units or other securities of any other entity 
or cash or any other assets, or (iii) transfers all or substantially all of 
its properties and assets to any other entity, or (iv) effects a 
reorganization or reclassification of the equity of the Company in such a way 
that holders of Units shall be entitled to receive stock, securities, cash or 
assets with respect to or in exchange for Units, then, and in each such case, 
proper provision shall be made so that, upon the exercise of this Warrant at 
any time after the consummation of such consolidation, merger, transfer, 
reorganization or reclassification, each Holder shall be entitled to receive 
(at the aggregate Exercise Price in effect for Units issuable upon such 
exercise of this Warrant immediately prior to such consummation), in lieu of 
Units issuable upon such exercise of this Warrant prior to such consummation, 
the stock and other securities, cash and assets to which such Holder would 
have been entitled upon such consummation if such Holder had so exercised 
this Warrant immediately prior thereto (subject to adjustments subsequent to 
such action as nearly equivalent as possible to the adjustments provided for 
in this Section 7).

     (l) Notice of Adjustment. Whenever the number of Units issuable upon the 
exercise of this Warrant or the Exercise Price for this Warrant is adjusted, 
as provided in this Section 7, the Company shall prepare and mail to each 
Holder a certificate setting forth (i) the Exercise Price and the number of 
Units issuable upon the exercise of this Warrant after such adjustment, (ii) 
a brief statement of the facts requiring such adjustment and (iii) the 
computation by which such adjustment was made.

     (m) No Change of Warrant Necessary. Irrespective of any adjustment in 
the Exercise Price for this Warrant or in the number or kind of securities 
issuable upon exercise of this Warrant, unless the Holder of this Warrant 
otherwise requests, this Warrant may continue to express the same price and 
number and kind of Units as are stated in this Warrant as initially issued.

     (n) Treasury Units. The number of Units outstanding at any given time 
shall not include Units owned or held by or for the account of the Company. 
The disposition of any Units


                                    6





<PAGE>


owned or held by or for the account of the Company shall be considered an 
issue of Units for the purposes of this Section 7.

          (o)  Certain Adjustment Rules.

               (i)   The provisions of this Section 7 shall similarly apply to 
successive transactions.

               (ii)  If the Company shall declare any distribution referred 
to in Section 7(i) and if any Holder exercises all or any part of this 
Warrant after such declaration but before the payment of such distribution, 
the Company may elect to defer, until the payment of such distribution, 
issuing to such Holder the Units issuable upon such exercise of this Warrant 
on the basis of the applicable Exercise Price in effect prior to such 
adjustment; provided, however, that the Company shall deliver to each such 
Holder a due bill or other appropriate instrument evidencing such Holder's 
right to receive such additional Units upon the payment of such distribution.

               (iii) If the Company shall declare any distribution referred 
to in Section 7(i) and shall legally abandon such distribution prior to 
payment, then no adjustment shall be made pursuant to this Section 7 in 
respect of such declaration.

          (p)  Exceptions to Adjustment to Purchase Price. Notwithstanding 
anything herein to the contrary, no adjustment to the Exercise Price for this 
Warrant or the number of Units issuable upon exercise of this Warrant shall 
be made in the case of the following:

               (i)   the issuance of any Units upon any exercise of this 
Warrant or any adjustment of the Exercise Price for this Warrant;

               (ii)  the grant of issuance of Options to purchase Units to 
employees, officers or directors of the Company; and

               (iii) the issuance of any Units upon the exercise of any 
Options outstanding as of the date hereof.

     8.  Legend. Upon exercise of this Warrant and the issuance of any of the 
Warrant Units hereunder, all certificates representing Units shall bear on 
the face thereof substantially the following legends, insofar as is 
consistent with Delaware Law:

         "The Units represented by this certificate have not been registered 
         under the Securities Act of 1933, as amended, and may not be sold, 
         offered for sale, assigned, transferred or otherwise disposed of, 
         unless registered pursuant to the provisions of that Act or an 
         opinion of counsel to the Company is obtained stating that such 
         disposition is in compliance with an available exemption from such 
         registration."

     9.  Applicable Law. This Warrant is issued under and shall for all 
purposes be governed by and construed in accordance with the laws of the 
State of Connecticut.

                                       7

<PAGE>

     10. Notice.  Notices and other communications to be given hereunder 
shall be given in accordance with the Subscription Agreement.

     IN WITNESS WHEREOF, the Company has caused this Warrant to be signed on 
its behalf, by its duly authorized officer.

                                              PRICELINE.COM LLL

                                              By  /s/ Jay Walker
                                                 --------------------------
                                                      Jay Walker
                                                      Its President

Dated: April 15, 1998


                                     8

<PAGE>

                         WARRANT EXERCISE FORM

The undersigned hereby irrevocably elects to exercise to the extent of 
purchasing _________ Units of PriceLine.com LLC and hereby makes payment at 
the rate of $_______ per share or an aggregate of $_________ in payment 
therefor.



                                     ____________________________
                                     Name of Registered Holder

                                     ____________________________
                                     Signature

                                     ____________________________
                                     Signature, if held jointly

                                     ____________________________
                                     Date


                          INSTRUCTIONS FOR ISSUANCE OF UNITS

            (If other than to the registered holder of the within warrant)

Name_______________________________________________________________________
                    (Please typewrite or print in block letters)

Address____________________________________________________________________

___________________________________________________________________________

Social Security or Taxpayer Identification Number__________________________

                           ASSIGNMENT FORM

                   The Holder hereby assigns and transfers unto

Name_______________________________________________________________________
                    (Please typewrite or print in block letters)

Address____________________________________________________________________

___________________________________________________________________________

the right to purchase Units of PriceLine.com LLC represented by this 
Warrant to the extent of ____ Units as to which such right is exercisable and 
does hereby irrevocably constitute and appoint ____________ Attorney, to 
transfer the same on the books of the Company with full power of substitution 
in the premises.

DATED:________________________           ____________________________
                                         Name of Registered Holder

                                         ____________________________
                                         Signature

                                         ____________________________
                                         Signature, if held jointly

                                   9





<PAGE>
                                                                       10.18

                                                               Warrant No. 2

NEITHER THIS WARRANT NOR THE UNITS ISSUABLE UPON EXERCISE HEREOF MAY BE
TRANSFERRED, SOLD, ASSIGNED, PLEDGED, ENCUMBERED, HYPOTHECATED OR
OTHERWISE DISPOSED OF UNLESS SUCH TRANSFER, SALE, ASSIGNMENT, PLEDGE,
ENCUMBRANCE, HYPOTHECATION OR OTHER DISPOSITION COMPLIES WITH THE PROVISIONS
OF THE SUBSCRIPTION AGREEMENT DATED AS OF MARCH 27, 1998 (A COPY OF WHICH IS
ON FILE WITH PRICELINE.COM LLC (TOGETHER WITH ITS SUCCESSORS, THE "COMPANY")
AND WHICH SHALL BE MAILED TO THE HOLDER HEREOF WITHOUT CHARGE WITHIN FIVE
DAYS AFTER RECEIPT BY THE COMPANY OF A WRITTEN REQUEST THEREFOR FROM SUCH
HOLDER) AND THE LLC AGREEMENT REFERENCED THEREIN. IN ADDITION TO THE
RESTRICTIONS ON TRANSFER SET FORTH OR REFERRED TO IN SUCH AGREEMENT, NO
TRANSFER, SALE, ASSIGNMENT, PLEDGE, ENCUMBRANCE, HYPOTEHCATION OR OTHER
DISPOSITION OF THIS WARRANT OR THE UNITS ISSUABLE UPON EXERCISE HEREOF MAY BE
MADE EXCEPT (A) PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT UNDER THE
SECURITIES ACT OF 1933, AS AMENDED, AND THE RULES AND REGULATIONS IN EFFECT
THEREUNDER (THE "ACT"), AND ALL APPLICABLE STATE SECURITIES OR "BLUE SKY"
LAWS OR (B) IF SUCH TRANSFER, SALE, ASSIGNMENT, PLEDGE, ENCUMBRANCE,
HYPOTEHCATION OR OTHER DISPOSITION IS EXEMPT FROM THE PROVISIONS OF THE ACT
AND, IF REQUIRED BY THE COMPANY. THE COMPANY HAS BEEN FURNISHED WITH AN 
OPINION OF COUNSEL FOR THE HOLDER, WHICH OPINION AND COUNSEL SHALL BE 
REASONABLY SATISFACTORY TO THE COMPANY, TO THAT EFFECT. THE HOLDER OF THIS 
WARRANT, BY ACCEPTANCE HEREOF, AGREES TO BE BOUND BY ALL OF THE PROVISIONS OF
THE AFORESAID AGREEMENTS.

                               PRICELINE.COM LLC

               (Organized under the laws of the State of Delaware)

            Void after 5:00 p.m., New York City time, on April 8, 2003

                    Warrant for the Purchase of 100,000 Units

     FOR VALUE RECEIVED, PRICELINE.COM LLC, a Delaware limited liability 
company (the "Company"), hereby verifies that

              -----------------WILLIAM SHATNER---------------

(the "Holder") is entitled, subject to the provisions of this warrant (the 
"Warrant"), to purchase from the Company, at any time, or from time to time 
during the period commencing at 9:00 a.m. New York City local time on 
April 9, 1998 (the "Base Date"), and expiring at 5:00 p.m. New York City


<PAGE>

local time on April 9, 2003 (the "Termination Date") up to ONE HUNDRED 
THOUSAND UNITS of the Company at a price of $0.00 per Unit (such exercise 
price per unit being hereinafter referred to as the "Exercise Price").

     The term "Unit" means the Units of the Company as constituted on the 
Base Date, together with any other equity securities that may be issued by 
the Company. In addition thereto or in substitution therefor. The number of 
Units to be received upon the exercise of this Warrant may be adjusted from 
time to time as hereinafter set forth. The Units deliverable upon such 
exercise, and as adjusted from time to time, are hereinafter sometimes referred
to as "Warrant Units."

     Upon receipt by the Company of evidence reasonably satisfactory to it of 
the loss, theft, destruction or mutilation of this Warrant, and (in the case 
of loss, theft or destruction) of reasonably satisfactory indemnification, 
and upon surrender and cancellation of this Warrant, if mutilated, the Company 
shall execute and deliver a new Warrant of like tenor and date.

     The Holder agrees with the Company that this Warrant is issued, and all 
the rights hereunder shall be held, subject to all of the conditions, 
limitations and provisions set forth herein. 

     1.  Exercise of Warrant. This Warrant may be exercised in whole or in 
part at any time, or from time to time, during the period commencing at 9:00 
a.m. New York City local time, on the Base Date and expiring at 5:00 p.m., 
New York City local time, on the Termination Date or if such day is a day on 
which banking institutions in the City of New York are authorized by law to 
close, then on the next succeeding day that shall not be such a day, by 
presentation and surrender hereof to the Company at its principal office with 
the Warrant Exercise Form attached hereto duly executed and accompanied by 
payment (either in cash or by certified or official bank check, payable to 
the order of the Company), of the Exercise Price for the number of Units 
specified in such Form and instruments of transfer, if appropriate, duly 
executed by the Holder or his or her duly authorized attorney. If this 
Warrant should be exercised in part only, the Company shall, upon surrender 
of this Warrant for cancellation, execute and deliver a new Warrant 
evidencing the rights of the Holder thereof to purchase the balance of the 
Units purchasable hereunder. Upon receipt by the Company of this Warrant, 
together with the Exercise Price, in proper form for exercise, the Holder 
shall be deemed to be the holder of record of the Units issuable upon such 
exercise, notwithstanding that the transfer books of the Company shall then 
be closed or that certificates representing such Units shall not then be 
actually delivered to the Holder. The Company shall pay any and all 
documentary stamp or similar issue or transfer taxes payable in respect of 
the issue or delivery of Units on exercise of this Warrant.

     2. Reservation of Units. The Company will at all times reserve for 
issuance and delivery upon exercise of this Warrant all Units or other equity 
securities of the Company (and other securities and property) from time to 
time receivable upon exercise of this Warrant. All such Units (and other 
securities and property) shall be duly authorized and, when issued upon such 
exercise, shall be validly issued, fully paid and nonassessable and free of 
all preemptive rights.

     3.  Restrictions Upon Transferability of Warrant and Warrant Stock; 
Transfer to Comply with the Securities Act of 1933 and the Subscription 
Agreement. Neither this Warrant nor the


                                       2

<PAGE>

Warrant Units issuable upon exercise of this Warrant have been registered 
under the Securities Act of 1933, as amended (the "Act"). Holders hereof 
and thereof shall be subject to such restrictions upon the sale or other 
disposition thereof, all as more fully set forth in or referred to in the 
Subscription Agreement of even date herewith between the Company and the 
Holder (the "Subscription Agreement") and the Limited Liability Company 
Agreement of the Company dated as of July 18, 1997 (as same may be amended, 
the "LLC Agreement"). The Subscription Agreement and the LLC Agreement are 
incorporated by reference as an integral part of this Warrant.

    4. Exchange, Transfer, Assignment or Loss of Warrant. This Warrant cannot 
be exchanged, transferred or assigned otherwise than in accordance with the 
provisions of the Subscription Agreement and the LLC Agreement. If the 
provisions of the Subscription Agreement are complied with, upon surrender of 
this Warrant to the Company with the Assignment Form annexed hereto duly 
executed and funds sufficient to pay any transfer tax, the Company shall, 
without charge, execute and deliver a new Warrant in the name of the heir, 
devisee or assignee named in such instrument of assignment and this Warrant 
shall promptly be cancelled.

    5. Rights of the Holder. The Holder shall not, by virtue hereof, be 
entitled to any rights of a Unitholder of the Company, either at law or in 
equity, and the rights of the Holder are limited to those expressed in this 
Warrant.

    6. Redemption. This Warrant is not redeemable by the Company.

    7. Adjustment of Number and Kind of Securities Purchasable upon Exercise 
of Warrant.

       (a) Definitions. As used in this Agreement, the following terms have 
the following respective meanings:

           (i)  "Convertible Securities" means any evidence of indebtedness, 
units or other securities directly or indirectly convertible into or 
exchangeable for Units.

           (ii) "Issue" means to grant, issue, sell assume, or fix a record 
date for determining persons entitled to receive, any security (including 
Options), whichever of the foregoing is the first to occur.

       (b) Unit Distributions. In case at any time the Company shall declare 
a dividend or make any other distribution upon any Units of the Company which 
is payable in Units or Convertible Securities, any Units or Convertible 
Securities, as the case may be, issuable in payment of such dividend or 
distribution shall be deemed to have been issued or sold without 
consideration.

       (c) Subdivision or Combination of Units. In case the Company shall at 
any time subdivide the outstanding Units into a greater number of Units, the 
number of Units issuable upon exercise of this Warrant immediately prior to 
such subdivision shall be proportionately increased, and conversely, in case 
the outstanding Units shall be combined at any time into a smaller number of 
Units, the number of Units issuable upon exercise of this Warrant immediately 
prior to such combination shall be proportionately reduced.


                                     3


<PAGE>

      (d) Adjustments for Consolidation, Merger, Sale of Assets, 
Reorganization, etc. In case the Company (i) consolidates with or merges into 
any other entity and is not the continuing or surviving entity of such 
consolidation or merger, or (ii) permits any other entity to consolidate with 
or merge into the Company and the Company is the continuing or surviving 
Company but, in connection with such consolidation or merger, the Units are 
changed into or exchanged for units or other securities of any other entity 
or cash or any other assets, or (iii) transfers all or substantially all of 
its properties and assets to any other entity, or (iv) effects a 
reorganization or reclassification of the equity of the Company in such a way 
that holders of Units shall be entitled to receive stock, securities, cash or 
assets with respect to or in exchange for Units, then, and in each such case, 
proper provision shall be made so that, upon the exercise of this Warrant at 
any time after the consummation of such consolidation, merger, transfer, 
reorganization or reclassification, each Holder shall be entitled to receive 
(at the aggregate Exercise Price in effect for Units issuable upon such 
exercise of this Warrant immediately prior to such consummation). In lieu of 
Units issuable upon such exercise of this Warrant prior to such consummation, 
the stock and other securities, cash and assets to which such Holder would 
have been entitled upon such consummation if such Holder had so exercised 
this Warrant immediately prior thereto (subject to adjustments subsequent to 
such action as nearly equivalent as possible to the adjustments provided for 
in this Section 7).

      (e) Notice of Adjustments. Whenever the number of Units issuable upon 
the exercise of this Warrant is adjusted, as provided in this Section 7, the 
Company shall prepare and mail to each Holder a certificate setting forth 
(i) the number of Units issuable upon the exercise of this Warrant after such 
adjustment, (ii) a brief statement of the facts requiring such adjustment and 
(iii) the computation by which such adjustment was made.

      (f) No Change of Warrant Necessary. Irrespective of any adjustment in 
the number or kind of securities issuable upon exercise of this Warrant, 
unless the Holder of this Warrant otherwise requests, this Warrant may 
continue to express the same price and number and kind of Units as are 
stated in this Warrant as initially Issued.

      (g) Certain Adjustment Rules.

          (i) The provisions of this Section 7 shall similarly apply to 
successive transactions.

          (ii) If the Company shall declare any distribution referred to in 
Section 7(b) and shall legally abandon such distribution prior to payment, 
then no adjustment shall be made pursuant to this Section 7 in respect of 
such declaration.

   8. Leased. Upon exercise of this Warrant and the issuance of any of the 
Warrant Units hereunder, all certificates representing Units shall bear on 
the face thereof substantially the legend set forth herein.

   9. Applicable Law. This Warrant is issued under and shall for all purposes 
be governed by and construed in accordance with the laws of the State of 
Connecticut.

                                       4

<PAGE>

   10. Notice. Notices and other communications to be given hereunder shall 
be given in accordance with the Subscription Agreement. 

   IN WITNESS WHEREOF, the Company has caused this Warrant to be signed on 
its behalf, by its duly authorized officer.  

                                       PRICELINE COM LLC

                                       By: /s/ Jay Walker
                                           ----------------
                                           Jay Walker
                                           Its President

Dated: April 9, 1998

                                       5
'<PAGE>




                             WARRANT EXERCISE FORM

The undersigned hereby irrevocably elects to exercise to the extent of 
purchasing               Units of PriceLine.com LLC and hereby makes payment 
at the rate of $       per share or an aggregate of $     in payment therefor.


                                        --------------------------
                                        Name of Registered Holder

                                        --------------------------
                                        Signature

                                        ---------------------------
                                        Signature, if held jointly

                                        ---------------------------
                                        Date


                      INSTRUCTIONS FOR ISSUANCE OF UNITS

         (If other than to the registered holder of the within warrant)

Name 
     -------------------------------------------------------------------------
                   (Please typewrite or print in block letters)

Address
        ----------------------------------------------------------------------
- ------------------------------------------------------------------------------

Social Security or Taxpayer Identification Number 
                                                  ----------------------------


                              ASSIGNMENT FORM

               The Holder hereby assigns and transfer unto


Name
      ------------------------------------------------------------------------
                   (Please typewrite or print in block letters)

Address
        ----------------------------------------------------------------------
- ------------------------------------------------------------------------------
the right to purchase Units of PriceLine.com LLC represented by this Warrant 
to the extent of   Units as to which such right is exercisable and does 
hereby irrevocably constitute and appoint                Attorney, to 
transfer the same on the books of the Company with full power of substitution 
in the premises.

DATED: 
      -------------------------              -------------------------------
                                             Name of Registered Holder


                                             --------------------------------
                                             Signature

                                             --------------------------------
                                             Signature, if held jointly



                                    6




  




<PAGE>

                                                   Exhibit 23.1

INDEPENDENT ACCOUNTANTS' CONSENT

We consent to use in this Registration Statement of priceline.com
Incorporated on Form S-1 of our report dated December 21, 1998 on
the combined financial statements of priceline.com Incorporated
and Priceline Travel, Inc. appearing in the Prospectus, which is
part of this Registration Statement. We also consent to the
reference to us under the heading "Experts" in such Prospectus.


/s/ DELOITTE & TOUCHE LLP

Stamford, Connecticut

December 23, 1998



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