Auction Sentry - Version 2.5.27 Whether a buyer or a seller, Auction Sentry streamlines & automates tracking and bidding on eBay Auctions. It Automates bidding placing your bid as close to the end of the auction as possible ("sniping"). The intuitive interface displays your auctions in a color-coded grid, indicating which auctions you are winning, which you have been out-bid on, and which you have set up a snipe bid for. Also alerts you when an auction receives a bid.