Bidding fee auction

Part of a series on
Auctions
Types
All-pay Chinese Bidding fee Dollar Amsterdam Anglo-Dutch Barter double Best/not best Brazilian Calcutta Candle Click-box bidding Combinatorial Common value Deferred-acceptance Discriminatory price Double Dutch English Forward French Generalized first-price Generalized second-price Japanese Knapsack Multi-attribute Multiunit No-reserve Rank Reverse Scottish Sealed first-price Simultaneous ascending Single-price Traffic light Uniform price Unique bid Value of revenues Vickrey Vickrey–Clarke–Groves Walrasian Yankee
Bidding
Shading Calor licitantis Cancellation hunt Jump Rigging Sniping Suicide Tacit collusion
Contexts
Algorithms Autos Art Charity Children Players Domain names Flowers Loans Scam Slaves Spectrum Stamps Virginity Wine Wives
Theory
Digital goods Price of anarchy Revenue equivalence Winner's curse
Online
Ebidding Private electronic market Software
v t e

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. Once time expires without a new bid being placed, the last bidder wins the auction and pays the amount of that bid. The auctioneer profits from both the fees charged to place bids and the payment for the winning bid; these combined revenues frequently total more than the value of the item being sold.^[1] Empirical evidence suggests that revenues from these auctions exceeds theoretical predictions for rational agents. This has been credited to the sunk cost fallacy.^[2] Such auctions are typically held over the Internet, rather than in person.