Auction

An auction is a process of buying and selling goods or services by offering them for bids, taking bids, and then selling the item to the highest bidder or, in some forms, buying it from the lowest bidder. The most common form is the open ascending price auction, in which bidders compete openly and each new bid must exceed the one before it, with an auctioneer announcing prices while bidders respond verbally or electronically. Auctions are used across an unusually wide range of goods and services, including antiques, paintings, rare collectibles, wine, livestock, radio spectrum, used cars, real estate, online advertising, vacation packages and emissions trading, which reflects their flexibility as a way of setting a price wherever more than one interested buyer or seller exists. This description is adapted from Wikipedia contributors under CC BY-SA 4.0; changes were made. https://creativecommons.org/licenses/by-sa/4.0/