We analyze the optimal provision of information in a procurement auction with horizontally dierentiated goods. The buyer has private information about her preferred location on the product space and has access to a costless communication device. A seller who pays the entry cost may submit a bid comprising a location and a minimum price. We characterize the optimal information structure and show that the buyer prefers to attract only two bids. Further, additional sellers are inecient since they reduce total and consumer surplus, gross of entry costs. We show that the buyer will not nd it optimal to send public information to all sellers. On the other hand, she may prot from setting a minimum price and that a severe hold-up problem arises if she lacks commitment to set up the rules of the auction ex-ante.
