Suppose a firm uses inputs that are substitutes. Each input is supplied by a single contractor. The firm would like to make suppliers compete. However, since inputs are imperfect substitutes, resorting to winner-take-all competition may not be an attractive option. We allow the firm to use a...

This paper considers the problem of identification and estimation in the first-price multi-unit auction. It is motivated by the auctions of bus routes held in London where bidders submit bids on combinations of routes as well as on individual routes. We show that submitting a combination bid...

This paper studies multi-attribute auctions in which a buyer seeks to procure a complex good and evaluate offers using a quasi-linear scoring rule. Suppliers have private information about their costs, which is summarized by a multi-dimensional type. The scoring rule reduces the multidimensional...