High Quality Content by WIKIPEDIA articles! AuctionSound is an eBay auction management system, founded in 2004 by That`s Us Technologies. The software was initially designed to manage the eBay Drop Off store concept that was coming into popularity at the time. Store owners found themselves in need of a new breed of sales management tools that facilitated selling items on consignment through eBay. Eventually it was marketed to the general public and has since been adopted by sellers of all types.