Yes, as noted: "Most eBay bids are proxy bids. If everybody understood that, figured out how much they wanted to pay, and bid their maximum, sniping would not be useful. However, many bidders have no idea how much they want to pay, so they bid in small increments until they beat your proxy. If you bid your maximum at the end of the auction, you greatly reduce the chances of being bid up by such a bidder."