When procuring multiple products from competing firms, a buyer may choose separate purchase, pure bundling, or mixed bundling. We show that pure bundling will generate higher buyer surplus than both separate purchase and mixed bundling, provided that trade for each good is likely to be...

This paper studies different rules in dissolving a common value partnership where one partner holds proprietary information. In winner's bid auction (WBA) and loser's bid auction (LBA), there exists a unique mixed strategy equilibrium. ``Payoff equivalence'' is established in the sense that...