We contribute to the literature on the optimal design of auction mechanisms for the procurement of nature conservation … decreases with repetition. Theory predicts that repetition facilitates collusion among sellers in procurement auctions, while …

This paper explores the impact of debarment as a deterrent of collusion in first-price procurement auctions. We develop … a procurement auction model where bidders can form bidding rings, and derive the bidding and collusive behavior under no … both reduce collusion and bids. The deterrent effect of debarment increases in its length. However, the debarment of …