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Auction sniping (also called bid sniping) is the practice, in a timed online auction, of placing a bid likely to exceed the current highest bid (which may be hidden) as late as possible—usually seconds before the end of the auction—giving other bidders no time to outbid the sniper.
Proxy bidding is an implementation of an English second-price auction used on eBay, in which the winning bidder pays the price of the second-highest bid plus a defined increment. It differs from a Vickrey auction in that bids are not sealed ; the "current highest bid" (defined as second-highest bid plus bid increment) is always displayed.
eBay can be used by individuals, companies and governments to purchase and sell almost any legal, non-controversial item. eBay's auctions use a Vickrey auction (sealed-bid) proxy bid system. Buyers and sellers may rate and review each other after each transaction, resulting in a reputation system.
A bidding fee auction (also known as a penny auction) requires customers to pay for bids, which they can increment an auction price one unit of currency at a time. The most notable bidding fee auction was Swoopo. Critics compare this type of auction to gambling, as users can spend a considerable amount of money without receiving anything in return.
Section 57(2) provides: "A sale by auction is complete when the auctioneer announces its completion by the fall of the hammer, or in other customary manner. Until the announcement is made any bidder may retract his bid." S. 57(3) provides further: "An auction sale may be subject to a reserve price".
Bridgeville, California (population 25) was the first town to be sold on eBay in 2002, and has been up for sale three times since. [1] In January 2003, Thatch Cay, the last privately held and undeveloped U.S. Virgin Island, was listed for auction by Idealight International. The minimum bid was US$3 million and the sale closed January 16, 2003. [2]
Minimum bid – the smallest opening bid that will be accepted. A minimum bid can be as little as $0.01 (one cent) depending on the auction. If no one bids at the initial minimum bid, the auctioneer may lower the minimum bid so as to create interest in the item.
The ‘‘‘bid decrement‘‘‘ can be high or low. If the bid decrement is low, the suppliers can decide more freely which price to choose. Therefore, the bidding is going to be more dynamic. If the bid decrement is high, the bidding steps must be optimally designed to obtain the best results.