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On the anti-competitive effects of quantity discounts


  • Calzolari, Giacomo
  • Denicolò, Vincenzo


We analyze the competitive effects of quantity discounts in an asymmetric duopoly. We find that for a sizeable set of parameter values, quantity discounts harm the smaller firm and reduce consumers' surplus. They can even decrease social welfare, i.e. the sum of producers' and consumers' surpluses. However, the circumstances in which quantity discounts may decrease social welfare are limited and difficult to identify in practice.

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  • Calzolari, Giacomo & Denicolò, Vincenzo, 2011. "On the anti-competitive effects of quantity discounts," International Journal of Industrial Organization, Elsevier, vol. 29(3), pages 337-341, May.
  • Handle: RePEc:eee:indorg:v:29:y:2011:i:3:p:337-341

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    References listed on IDEAS

    1. B. Douglas Bernheim & Michael D. Whinston, 1998. "Exclusive Dealing," Journal of Political Economy, University of Chicago Press, vol. 106(1), pages 64-103, February.
    2. Giacomo Calzolari & Vincenzo Denicol?, 2013. "Competition with Exclusive Contracts and Market-Share Discounts," American Economic Review, American Economic Association, vol. 103(6), pages 2384-2411, October.
    3. Dennis W. Carlton & Patrick Greenlee & Michael Waldman, 2008. "Assessing the Anticompetitive Effects of Multiproduct Pricing," NBER Working Papers 14199, National Bureau of Economic Research, Inc.
    4. Mark Armstrong & John Vickers, 2010. "Competitive Non-linear Pricing and Bundling," Review of Economic Studies, Oxford University Press, vol. 77(1), pages 30-60.
    5. Calzolari, Giacomo & Denicolò, Vincenzo, 2010. "Competitive quantity discounts," CEPR Discussion Papers 8144, C.E.P.R. Discussion Papers.
    6. David Martimort & Lars Stole, 2009. "Market participation in delegated and intrinsic common-agency games," RAND Journal of Economics, RAND Corporation, vol. 40(1), pages 78-102.
    7. Greenlee, Patrick & Reitman, David & Sibley, David S., 2008. "An antitrust analysis of bundled loyalty discounts," International Journal of Industrial Organization, Elsevier, vol. 26(5), pages 1132-1152, September.
    8. Dennis W. Carlton & Michael Waldman, 2008. "Safe Harbors for Quantity Discounts and Bundling," EAG Discussions Papers 200801, Department of Justice, Antitrust Division.
    9. David Spector, 2005. "Loyalty Rebates: An Assessment of Competition Concerns and a Proposed Structured Rule of Reason," CPI Journal, Competition Policy International, vol. 1.
    10. David Mills, 2010. "Inducing Downstream Selling Effort with Market Share Discounts," International Journal of the Economics of Business, Taylor & Francis Journals, vol. 17(2), pages 129-146.
    11. Sreya Kolay & Greg Shaffer & Janusz A. Ordover, 2004. "All-Units Discounts in Retail Contracts," Journal of Economics & Management Strategy, Wiley Blackwell, vol. 13(3), pages 429-459, September.
    12. Adrian Majumdar & Greg Shaffer, 2009. "Market-Share Contracts with Asymmetric Information," Journal of Economics & Management Strategy, Wiley Blackwell, vol. 18(2), pages 393-421, June.
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    Cited by:

    1. Griva, Krina & Vettas, Nikolaos, 2015. "On two-part tariff competition in a homogeneous product duopoly," International Journal of Industrial Organization, Elsevier, vol. 41(C), pages 30-41.
    2. Ordover, Janusz A. & Shaffer, Greg, 2013. "Exclusionary discounts," International Journal of Industrial Organization, Elsevier, vol. 31(5), pages 569-586.
    3. Greer, Katja, 2013. "Limiting rival's efficiency via conditional discounts," Annual Conference 2013 (Duesseldorf): Competition Policy and Regulation in a Global Economic Order 79730, Verein für Socialpolitik / German Economic Association.
    4. Katja Greer, 2013. "Limiting rival's efficiency via conditional discounts," Working Papers 132, Bavarian Graduate Program in Economics (BGPE).


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