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                          FIRST AMENDMENT TO AGREEMENT


        This First Amendment to the Agreement (the "Amendment") dated as of June
21, 1999 (the "Agreement") is entered into by and between Tickets.com, Inc., a
Delaware corporation ("Tickets.com", formerly known as Advantix, Inc.) and RBB
Bank AG, a bank organized under the laws of Austria ("RBB").

                                   BACKGROUND

        The parties have determined that it is in their mutual best interest to
amend the Agreement in order to permit Tickets.com to purchase the 5,700 shares
of Series G Preferred Stock (the "Preferred Shares") of Lasergate Systems, Inc.
("Lasergate") held by RBB prior to any merger between Tickets.com and Lasergate
(the "Merger"). Accordingly, in consideration of the mutual covenants and
agreements set forth below, the parties agree as follows:

                                      TERMS


        1.      Purchase of Preferred Shares. Tickets.com agrees to purchase all
                of the Preferred Shares within three business days (the "Closing
                Date") of the execution of a definitive agreement and plan of
                merger between Tickets.com, Advantix Acquisition Corp. and
                Lasergate, in exchange for, at the election of RBB, (a) 170.081
                shares of the common stock of Tickets.com for each outstanding
                Preferred Share; or (b) $435.00 per each outstanding Preferred
                Share, or a combination thereof. RBB shall make its election, in
                writing, no later than 5:00 p.m. Eastern time on June 21, 1999.
                If RBB elects to receive cash, it shall include its wire
                transfer instructions with the notice of its election.

        2.      Sale of Preferred Shares. On the Closing Date, RBB shall sell,
                transfer, convey and deliver to Tickets.com, and Tickets.com
                shall purchase and accept delivery of, the Preferred Shares. RBB
                shall deliver to Tickets.com stock certificates representing the
                Preferred Shares, together with appropriate stock powers
                endorsed in blank.

        3.      Purchase Price. In exchange for this transfer of the Preferred
                Shares by RBB, Tickets.com shall transfer, convey and deliver to
                RBB cash or shares of the common stock of Tickets.com, or a
                combination thereof, pursuant to the election made by RBB on or
                before June 11, 1999 in accordance with Section 1 above. If

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                applicable, Tickets.com shall deliver to RBB a stock certificate
                representing such shares of Tickets.com common stock.

        4.      Shares of Common Stock Held by RBB. The shares of common stock
                of Lasergate held by RBB shall be purchased as part of the
                Merger and not as part of this purchase transaction.

        5.      Conditions to Closing. The obligation of Tickets.com to purchase
                RBB's Preferred Shares shall be subject to the following
                conditions: (a) the execution of a definitive merger agreement
                by Tickets.com and Lasergate; and (b) the resignation of
                Jacqueline E. Soechtig ("JES") as an officer and director of
                Lasergate and the receipt by Lasergate of a release from JES
                (reasonably acceptable to Tickets.com).

        6.      Effect of the Agreement. All other provisions contained in the
                Agreement and not amended by this Amendment, remain in full
                force and effect.



        IN WITNESS WHEREOF, the undersigned have executed this Amendment as of
the date set forth above.



                                         TICKETS.COM, INC.


                                          By:  /s/ John M. Markovich
                                              --------------------------------
                                              John M. Markovich,
                                              Executive Vice President



                                        RBB BANK AG


                                        By:  /s/ Herbert Strausz
                                              --------------------------------
                                               Herbert Strausz, Manager
                                               U.S. Equities
