The auction with target bids preserves the detail-free property of its prototype Vickrey auction. It thus contributes to the growing body of literature on detail-free auctions,7 and is, to the best of my knowledge, the first among those to address the problem of bidder collusion. Detail-free here means that neither the allocation nor the price depend on the prior distribution of bidders’ willing- ness to pay for the object. Furthermore, the auction with target bids does not require the knowledge of colluding bidder identities, because it provokes a con- flict internally within the cartel. Detail-free mechanisms, such as the auction with target bids, alleviate the “garbage in - garbage out”8 problem pervading one-shot interactions.