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Bidtopia was an e-commerce site originally launched in 2007 as a private auction site for Warehouse86 Ventures, LLC. Paul St. James, an owner of Bargainland, which had been the largest PowerSeller on eBay that same year, started the new enterprise in response to changes in eBay policies regarding high volume sales of brand name merchandise and restrictions on sellers with poor customer feedback.
The generalized second-price auction (GSP) is a non-truthful auction mechanism for multiple items. Each bidder places a bid. The highest bidder gets the first slot, the second-highest, the second slot and so on, but the highest bidder pays the price bid by the second-highest bidder, the second-highest pays the price bid by the third-highest, and so on.
A bidding fee auction, also called a penny auction, is a type of all-pay auction in which all participants must pay a non-refundable fee to place each small incremental bid. The auction is extended each time a new bid is placed, typically by 10 to 20 seconds.
An online auction (also electronic auction, e-auction, virtual auction, or eAuction) is an auction held over the internet and accessed by internet connected devices. [ 1 ] [ 2 ] [ 3 ] Similar to in-person auctions, online auctions come in a variety of types , with different bidding and selling rules.
A first-price sealed-bid auction (FPSBA) is a common type of auction. It is also known as blind auction. [1] In this type of auction, all bidders simultaneously submit sealed bids so that no bidder knows the bid of any other participant. The highest bidder pays the price that was submitted. [2]: p2 [3]
Another special case of a combinatorial auction is the combinatorial clock auction (CCA), which combines a clock auction, during which bidders may provide their confirmations in response to the rising prices, with a subsequantial sealed bid auction, in which bidders submit sealed package bids. The auctioneer uses the final bids to compute the ...
The uniform-price auction does not, however, result in bidders bidding their true valuations as they do in a second-price auction unless each bidder has demand for only a single unit. A generalization of the Vickrey auction that maintains the incentive to bid truthfully is known as the Vickrey–Clarke–Groves (VCG) mechanism.
The most straightforward form of an all-pay auction is a Tullock auction, sometimes called a Tullock lottery after Gordon Tullock, in which everyone submits a bid but both the losers and the winners pay their submitted bids. [5] This is instrumental in describing certain ideas in public choice economics. [citation needed]
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