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Bid Costs and Endogenous Bid Caps

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  • Gavious, Arieh

    () (Ben Gurion University, Faculty of Engineering Sciences, School of Industrial Engineering and Management)

  • Moldovanu, Benny

    () (Department of Economics, University of Mannheim, Germany)

  • Sela, Aner

    () (Ben Gurion University)

Abstract

We study contests where several privately informed agents bid for a price. All bidders bear a cost of bidding that is an increasing function of their bids, and, moreover, bids may be capped. We show that, regardless of the number of bidders, if agents have linear or concave cost functions then setting a bid cap is not profitable for a designer who wishes to maximize the average bid. On the other hand, if agents have convex cost functions (i.e. an increasing marginal cost) then affectively capping the bids is profitable for a designer facing a sufficiently large number of bidders.

Suggested Citation

  • Gavious, Arieh & Moldovanu, Benny & Sela, Aner, 2000. "Bid Costs and Endogenous Bid Caps," Sonderforschungsbereich 504 Publications 01-19, Sonderforschungsbereich 504, Universität Mannheim;Sonderforschungsbereich 504, University of Mannheim.
  • Handle: RePEc:xrs:sfbmaa:01-19 Note: Roman Inderest and Larry Samuelson made several helpful comments.
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    1. John C. Harsanyi & Reinhard Selten, 1988. "A General Theory of Equilibrium Selection in Games," MIT Press Books, The MIT Press, edition 1, volume 1, number 0262582384, January.
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    4. Brusco, Sandro & Lopomo, Giuseppe, 1999. "Collusion via signaling in open ascending auctions with multiple objects and complementarities," DEE - Working Papers. Business Economics. WB 6518, Universidad Carlos III de Madrid. Departamento de Economía de la Empresa.
    5. Robert Wilson, 1979. "Auctions of Shares," The Quarterly Journal of Economics, Oxford University Press, vol. 93(4), pages 675-689.
    6. R. Preston McAfee & John McMillan, 1996. "Analyzing the Airwaves Auction," Journal of Economic Perspectives, American Economic Association, vol. 10(1), pages 159-175, Winter.
    7. Krishna, Kala, 1993. "Auctions with Endogenous Valuations: The Persistence of Monopoly Revisited," American Economic Review, American Economic Association, vol. 83(1), pages 147-160, March.
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