When goods are substitutes, the Vickrey outcome is in the core and yields competitive seller revenue. In contrast, with … complements, the Vickrey outcome is efficient but not necessarily in the core and revenue can be low. Non-core outcomes may be … perceived as unfair since there are bidders willing to pay more than the winners' payments. Moreover, non-core outcomes render …

) coalitional equilibrium, describe a (cooperative) partition form game. A coalition is core-stable if the core of a suitable … possible explanation for cartels' structures (not) observed in practice. -- auctions ; Bayesian game ; collusion ; core …