Dollar auction

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The dollar auction is a non-zero sum sequential game designed by economist Martin Shubik to illustrate a paradox brought about by traditional rational choice theory in which players with perfect information in the game are compelled to make an ultimately irrational decision based completely on a sequence of rational choices made throughout the game.[1]

The dollar auction is also referred to as the penny auction. Its modern version was invented by Albert Liske [2] in conjunction with Swoopo AG which resulted in the website known as [2]


The setup involves an auctioneer who volunteers to auction-off a dollar bill with the following rule: the bill goes to the winner; however, the two highest bidders must pay the highest amount they bid. The winner can get a dollar for mere five cents, but only if no one else enters into the bidding war. The second-highest bidder is the biggest loser by paying the top amount he/she bid without getting anything back. The game begins with one of the players bidding 5 cents (the minimum), hoping to make a 95 cent profit. He can be outbid by another player bidding 10 cents, as a 90 cent profit is still desirable. Similarly, another bidder may bid 15 cents, making an 85 cent profit. Meanwhile, the second bidder may attempt to convert his loss of 10 cents into a gain of 80 cents by bidding 20 cents, and so on. Every player has a choice of either paying for nothing or bidding five cents more on the dollar. Any bid beyond the value of a dollar, is a loss for all bidders alike. Only the auctioneer gets to profit in the end.[1]

See also[edit]


  1. ^ a b Shubik: 1971. Page 109
  2. ^ a b Liske: 2003. Page 211