We study an original equipment manufacturer (OEM) purchasing two inputs for assembly from two suppliers with private cost information. The OEM can contract with the two suppliers either simultaneously or sequentially. We consider both cases in which the OEM has relatively equal bargaining power...

ABSTRACT. Popular procurement auction formats vary along two main dimensions: (1) whether the winner is determined by the lowest price or by the buyer, and (2) whether auctions are sealed bid or dynamic. The attractiveness of these formats critically depends on information available to bidders...