We report on the experimental results of simple auctions with (i) a median-bid pricing rule and (ii) non-binding bids (winning bids can be withdrawn) – the two central pillars of the competitive bidding program designed by the Centers for Medicare & Medicaid Services (CMS). Comparisons between the performance of the CMS auction and the performance of the excluded-bid auction reveal the problematic nature of the CMS auction. The CMS auction fails to generate competitive prices of goods and fails to satisfy demand. In all proposed efficiency measures, we find the excluded-bid auction significantly outperforms the CMS auction.
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