Winner pays all

During a reverse auction, suppliers only see their own bid and rank. They see no other data from competitors. Image: BidBridge

When comparing a traditional paper method and electronic bidding, there are no differences in the process other than the ability to lower your bid. Image: American Public Works Association

Bidders went wild during a reverse auction for waste collection services in Dallas, Ga., submitting 160 bids in 67 minutes with 22 first-place turnovers. Photo: City of Dallas, Ga.

During a reverse auction for 140-hp John Deere mowers for two airports, the Johnson County (Kan.) Public Works Department decided not to accept any bid and instead awarded a supplier who had submitted an earlier offer of $88,000. Photo: Johnson County

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