Bidding Bids are binding. The minimum next bid is shown on every auction and is calculated by our servers from the platform increment table or the seller's fixed increment. Anti-sniping If a bid is placed in the final minutes of an auction, the end time is automatically extended so every bidder has a fair chance to respond. Reserve prices Some auctions have a confidential reserve price. If bidding does not reach the reserve, the auction ends without a sale. No reserve auctions sell to the highest valid bid. Treatments & certificates Always read the treatment disclosure and any laboratory report before bidding.