Abstract: A consumer wireless shopping device, such as a phone or PDA, communicates with a server for completing purchase transactions. Consumers can store preferences, shopping lists, payment methods and shipping addresses on the server to aid with shopping. The location of the of the device is determined, such as by GPS or RF triangulation, and used by the server to help direct consumers to merchant locations for viewing items to be purchased as well as to inform consumers of special sales or desired items within a specified geographic distance. The system allows for use of various delivery options, including in-store pick-up and Internet fulfillment. The system also allows for use of various price-negotiation methods, including use of auction-bidding, competitor price-matching, and buying clubs, and volume discounting.