Abstract: A system and method for executing a payment transaction over a computer network are provided. Users of an electronic marketplace are able to place bids on items for sale or to sell items at an offer price. seller the user's bid or offer is accepted, a payment transaction is automatically completed whereby the seller receives payment for the item they are selling and the buyer is charged for the item they are buying. In addition, a marketplace transaction fee is exacted as part of the payment transaction.

Abstract: An electronic exchange and a method for trading a seat license, tickets and contingent event ticket certificates for events at certain venues and for events which may be or may not be scheduled in the future to take place at the venue are provided. The seat licenses and season tickets grant the licensee or holder the right and in some cases the obligation to purchase tickets and the contingent event ticket certificates. Contingent event ticket certificates convert to event tickets at a time associated with the actual scheduling of the contingent event, when the contingent event ticket certificate converts the holder of the contingent event ticket certificate is charged the face value of the ticket. The exchange and method provide for trading in seat licenses, tickets and contingent event ticket certificates between a number of buyers and sellers.