We compare equilibria with sequential and simultaneous moves under homogeneous-good Bertrand competition when unit costs are private information. Under an alternative interpretation, we examine the consequences of awarding a right of first refusal in a first-price procurement auction with...

We examine the problem of endogenous entry in a single-unit auction when the seller's welfare depends positively on the utility of a subset of potential bidders. We show that, unless the seller values those bidders' welfare more than her own "private" utility, a nondiscriminatory auction is optimal.