An Internet-based purchasing system and associated method, including: (i) a remote terminal for use by a consumer; (ii) an on-line purchasing system, wherein the system further includes a system database in communication with the remote terminal for storing both consumer information and ticket and merchandise information; (iii) a user interface between the remote terminal and the on-line purchasing system for allowing the exchange of information and commands between the remote terminal and the on-line purchasing system; (iv) at least one source system in communication with the on-line purchasing system for allowing vendors of tickets or merchandise to sell items on-line, wherein the source system further includes a source database for storing current ticket and merchandise information; (v) a communication interface between the on-line purchasing system and the source system for allowing data exchange between the systems; (vi) software means for allowing the on-line purchasing system to monitor the source system for current ticket or merchandise information and communicate the information back to the on-line purchasing system; (vii) software means for allowing the on-line purchasing system to execute the purchase of tickets or merchandise from the source system based on the current information; and (viii) software means for allowing the source system to communicate with the remote terminal to indicate the completion of the purchase to the consumer.