Extraction of the surplus in standard auctions [revised July 2002]
Crer and McLean  and McAfee and Reny  showed that, in "nearly all auctions", the seller can offer a mechanism that obtains full rent extraction. Later, Robert  showed that the result fails in the presence of either limited liability or risk aversion. This paper provides yet another reason. It shows that the full rent extraction result fails if the seller is restricted to using auctions where the bidders’ payments to the seller depend on the bids alone. Our interest for this problem is motivated by the fact that both the "standard model of auction" () as well as the most popular auctions display this feature. As a general matter, the proof shows that full rent extraction results fail whenever the mechanism uses only part of the information embodied in a player type.
|Date of creation:||2003|
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