Charity auctions with multiple goods: Bidding behavior and revenue

In a charity auction with multiple goods, we show that the highest-losing bid uniform price auction revenue dominates its lowest-winning bid counterpart. Only in the highest-losing bid uniform price auction is bidding independent of the number of goods and players and revenue increasing in the number of goods. ► We extend existing models of charity auctions to allow for the sale of multiple goods. ► The highest-losing bid uniform price auction is shown to revenue dominate its lowest-winning bid counterpart. ► We show that the highest-losing bid uniform price auction is independent of the number of goods and players. ► The highest-losing bid uniform price auction is monotonically increasing in the number of goods. ► These three characteristics make the highest-losing bid uniform price auction appropriate for a charity auction.