In this paper we study a large market in which sellers compete by offering auctions to buyers instead of simple fixed price contracts. Two variants of the model are studied. One extends a model first analyzed by Wolinsky (1988) in which buyers learn their valuations only after meeting sellers....

This paper studies an internet trading mechanism similar to the one described in Peters and Severinov (2001) in a market where traders values are interdependent. It is shown that under reasonable conditions this mechanism has a perfect Bayesian equilibrium which supports allocations that...