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Uniqueness of the reserve price with asymmetric bidders

G├╝nay, Hikmet
Meng, Xin
Nagelberg, Mark
We analyze the optimal reserve price in a second price auction when there are ­ŁĹü types of bidders whose valuations are drawn from different distribution functions. The seller cannot determine the specific ÔÇťdistribution typeÔÇŁ of each bidder. In this paper, we give sufficient conditions for the uniqueness of the optimal reserve price. Then, we give sufficient conditions that ensure the seller will not use a reserve price; hence, the auction will be efficient.