We study a multi-unit auction environment similar to eBay. Sellers, each with a single unit of a homogenous good, set reserve prices at their own independent second-price auctions. Each buyer has a private value for the good and wishes to acquire a single unit. Buyers can bid as often as they...

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....

A multi-unit auction environment similar to Ebay is studied. Sellers who wish to sell a single unit of a homogenous good set reserve prices for their own independently run auctions. Buyers who hope to acquire a single unit bid as often as they like in a dynamic second price auction. When the...