Self-service shopping system including an electronic price label system

A self-service shopping system which uses an electronic price label (EPL) associated with an item to send a signal to a transaction processing system to record the selection of a product by a customer. An item selector card associated with a customer selects items for purchase. An item selector card reader reads the item selector card. The transaction processing system maintains a list of the selected items. The EPL system includes a plurality of EPLs associated with a plurality of items including the selected items. The EPLs communicate item identification information for the selected items to the transaction processing system.