Abstract: An enhanced online auction system facilitates auction buyers listing items wanted for purchase. Users such as traders may use the auction system to search the item-wanted listings, the item-available listings, or both. Item-available listings may be offered for immediate-sale, auction, or best-offer sale. Item-wanted listings may be solicited for immediate-purchase, reverse-auction, or best-offer purchase. Item-available listings and item-wanted listings may be generated by using an existing listing as a template. All sale and purchase offers may incorporate time-dependent pricing. Auction traders may list a product line or set of item-wanted listings in a hierarchical structure. Fulfillment proposals facilitate auction sellers satisfying a set of item-wanted listings from one or more buyers. Item-available listings and item-wanted listings may be linked or cross-linked by auction traders or automatically by auction system processes.

Abstract: An enhanced online auction system facilitates auction buyers listing items wanted for purchase. Users such as traders may use the auction system to search the item-wanted listings, the item-available listings, or both. Item-available listings may be offered for immediate-sale, auction, or best-offer sale. Item-wanted listings may be solicited for immediate-purchase, reverse-auction, or best-offer purchase. Item-available listings and item-wanted listings may be generated by using an existing listing as a template. All sale and purchase offers may incorporate time-dependent pricing. Auction traders may list a product line or set of item-wanted listings in a hierarchical structure. Fulfillment proposals facilitate auction sellers satisfying a set of item-wanted listings from one or more buyers. Item-available listings and item-wanted listings may be linked or cross-linked by auction traders or automatically by auction system processes.