Ruffle, Bradley J. (2009): When Do Large Buyers Pay Less? Experimental Evidence.
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The rise in mega-retailers has contributed to a growing literature on buyer power and large-buyer discounts. According to Rotemberg and Saloner (1986) and Snyder (1998), large buyers' ability to obtain price discounts depends on their relative (rather than absolute) size and the degree of competition between suppliers. I test experimentally comparative statics implications of this theory concerning the number of sellers and the sizes of the buyers in the market. The results track the comparative statics predictions to a surprising extent. Subtle changes in the distribution of buyer sizes or the number of suppliers can create or negate large-buyer discounts. The results highlight the previously unexplored role of the demand structure in determining buyer-size discounts. Furthermore, the experiments establish the presence of small-buyer premia, not anticipated by the theory.
|Item Type:||MPRA Paper|
|Original Title:||When Do Large Buyers Pay Less? Experimental Evidence|
|Keywords:||experimental economics, large-buyer discounts, buyer power, seller competition|
|Subjects:||C - Mathematical and Quantitative Methods > C9 - Design of Experiments > C92 - Laboratory, Group Behavior
D - Microeconomics > D4 - Market Structure, Pricing, and Design > D43 - Oligopoly and Other Forms of Market Imperfection
|Depositing User:||Bradley Ruffle|
|Date Deposited:||10. Aug 2009 14:12|
|Last Modified:||07. May 2014 03:43|
Abbink, Klaus and Brandts, Jordi (2009) ``Collusion in Growing and Shrinking Markets: Empirical Evidence from Experimental Duopolies," in Experiments and Antitrust Policy, J. Hinloopen and H.-T. Normann (eds.), Cambridge University Press, Cambridge.
Andreoni, James and Rachel Croson (2008) ``Partners versus Strangers: The Effect of Random Rematching in Public Goods Experiments,” in Handbook of Experimental Economics Results, C. R. Plott and V. L. Smith (eds.), North Holland.
Aoyagi, Masaki and Guillaume R. Frechette (forthcoming) ``Collusion as Public Monitoring Becomes Noisy: Experimental Evidence," Journal of Economic Theory.
Bergahl, Michael (2004) ``What I Learned from Sam Walton: How to Compete in a Wal-Mart World," John Siley & Sons: Hoboken, NJ.
Ellison, Sara Fisher and Christopher M. Snyder (forthcoming) ``Countervailing Power in Wholesale Pharmaceuticals," Journal of Industrial Economics.
Engle-Warnick, James and Robert L. Slonim (2006) ``Learning to Trust in Indefinitely Repeated Games," Games and Economic Behavior, 54, 95-114.
Feinberg, Robert M. and Thomas A. Husted (1993) ``An experimental test of discount-rate effects on collusive behavior in duopoly markets," Journal of Industrial Economics, 41:2, 153-160.
Feinberg, Robert and Christopher Snyder (2002) ``Collusion with secret price cuts: an experimental investigation," Economics Bulletin, 3:6, 1-11.
Fischbacher, Urs (2007) ``z-Tree: Zurich Toolbox for Ready-made Economic Experiments," Experimental Economics, 10:2, 171-178.
Fishman, Charles (2003) ``The Wal-Mart You Don't Know," Fast Company, December: 77, 68.
Haltiwanger, John and Joseph E. Harrington Jr. (1991) ``The Impact of Cyclical Demand Movements on Collusive Behavior," RAND Journal of Economics, 22:1, 89-106.
Huck, Steffen, Hans-Theo Normann and Jorg Oechssler (2004) ``Two are Few and Four are Many: On Number Effects in Cournot Oligopoly,'' Journal of Economic Behavior and Organization, 53, 435-446.
Isaac, R. Mark and Stanley S. Reynolds (2002) ``Two or Four Firms: Does It Matter," in Research in Experimental Economics, (C. Holt and R. M. Isaac, eds.), vol.~9, JAI-Elsevier: Amsterdam.
Kandori, Michihiro (1991) ``Correlated Demand Shocks and Price Wars during Booms," Review of Economic Studies, 58:1, 171-180.
List, John A. (2008) ``The Economics of Open Air Markets," unpublished manuscript.
Normann, Hans-Theo, Bradley J. Ruffle and Christopher M. Snyder (2007) ``Do Buyer-Size Discounts Depend on the Curvature of the Surplus Function? Experimental Tests of Bargaining Models," RAND Journal of Economics, 38:3, 747-767.
Rojas, Christian (2009) ``The Role of Information and Monitoring on Collusion," unpublished manuscript.
Rotemberg, Julio and Garth Saloner (1986) ``A supergame-theoretic model of business cycles and price wars during booms," American Economic Review, 76, 390-407.
Roth, Alvin K. and J. Keith Murnighan (1978) ``Equilibrium Behavior and Repeated Play of the Prisoner's Dilemma," Journal of Mathematical Psychology, 17, 189-198.
Ruffle, Bradley J. (2009) ``Buyer Countervailing Power: A Survey of the Theory and Experimental Evidence," in Experiments and Antitrust Policy , J. Hinloopen and H.-T. Normann (eds.), Cambridge University Press: Cambridge.
Scherer, Frederic M. and David Ross (1990) Industrial Market Structure and Economic Performance, 3rd ed., Houghton Mifflin: Boston, MA.
Snyder, Christopher M. (1996) ``A Dynamic Theory of Countervailing Power," RAND Journal of Economics, 27, 747-769.
Snyder, Christopher M. (1998) ``Why Do Large Buyers Pay Lower Prices? Intense Supplier Competition," Economics Letters, 58, 205-209.
Snyder, Christopher M. (2008) ``Countervailing Power," in The New Palgrave Dictionary of Economics, 2nd edition, Steven N. Durlauf and Lawrence E. Blume (eds.), Palgrave Macmillan.
Walton, Sam and John Huey (1993) Sam Walton: Made in America, Bantam Books: New York.