Heterogeneous Price Information and the Effect of Competition
This paper examines how the distribution of prices and consumer welfare change with the number of competitors in a model where consumers di¤er in the amount of price information they have. We only assume that an increase in the number of competitors results in an increase in the probability that consumers observe more prices. We then show, first, that the lower percentiles of the price distribution must decrease when the number of competitors goes up, while the higher percentiles of the price distribution need not decrease. We next provide a sufficient condition for all price percentiles to decline. In such a situation, some percentiles fall more than others, which leads to asymmetric consumer welfare gains from increased competition. Third, we provide a sufficient condition under which the higher percentiles of the distribution of prices paid by all types of consumers increase. When this happens, the probability that a consumer already paying a high price will pay even a higher price increases and it may even be the case that some consumers experience a welfare loss on average. Nevertheless, the weighted average price paid by consumers - the consumer surplus - always (weakly) decreases with increased competition. We provide an empirical strategy to identify how the response of prices to increased competition varies along the price distribution and use gasoline price data from the Netherlands to illustrate.
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- Maarten C. W. Janssen & José Luis Moraga-Gonz�lez, 2004. "Strategic Pricing, Consumer Search and the Number of Firms," Review of Economic Studies, Oxford University Press, vol. 71(4), pages 1089-1118.
- Barron, John M. & Taylor, Beck A. & Umbeck, John R., 2004. "Number of sellers, average prices, and price dispersion," International Journal of Industrial Organization, Elsevier, vol. 22(8-9), pages 1041-1066, November.
- Perloff, Jeffrey M. & Wu, Ximing, 2007. "Tax incidence varies across the price distribution," Economics Letters, Elsevier, vol. 96(1), pages 116-119, July.
- Baye, Michael R. & Kovenock, Dan & de Vries, Casper G., 1992. "It takes two to tango: Equilibria in a model of sales," Games and Economic Behavior, Elsevier, vol. 4(4), pages 493-510, October.
- Mark Armstrong & John Vickers & Jidong Zhou, 2009.
"Consumer Protection and the Incentive to Become Informed,"
Journal of the European Economic Association,
MIT Press, vol. 7(2-3), pages 399-410, 04-05.
- Armstrong, Mark & Vickers, John & Zhou, Jidong, 2008. "Consumer protection and the incentive to become informed," MPRA Paper 9898, University Library of Munich, Germany.
- Jose Luis Moraga-Gonzalez & Zsolt Sandor & Matthijs R. Wildenbeest, 2010.
"Nonsequential Search Equilibrium with Search Cost Heterogeneity,"
2010-11, Indiana University, Kelley School of Business, Department of Business Economics and Public Policy.
- Moraga-Gonzalez, Jose L. & Sandor, Zsolt & Wildenbees, Matthijs R., 2010. "Nonsequential search equilibrium with search cost heterogeneity," IESE Research Papers D/869, IESE Business School.
- Armstrong, Mark & Vickers, John, 2001. "Competitive Price Discrimination," RAND Journal of Economics, The RAND Corporation, vol. 32(4), pages 579-605, Winter.
- Armstrong, Mark, 2008.
"Interactions between competition and consumer policy,"
7258, University Library of Munich, Germany.
- Mark Armstrong, 2008. "Interactions between Competition and Consumer Policy," CPI Journal, Competition Policy International, vol. 4.
- Maarten C. W. Janssen & José Luis Moraga-González, 2004. "Strategic Pricing, Consumer Search and the Number of Firms," Review of Economic Studies, Wiley Blackwell, vol. 71(4), pages 1089-1118, October.
- Matthijs R. Wildenbeest, 2011.
"An empirical model of search with vertically differentiated products,"
RAND Journal of Economics,
RAND Corporation, vol. 42(4), pages 729-757, December.
- Matthijs R Wildenbeest, 2009. "An Empirical Model of Search with Vertically Differentiated Products," Working Papers 2009-01, Indiana University, Kelley School of Business, Department of Business Economics and Public Policy.
- Michael H. Riordan & Yongmin Chen, 2005. "Price and Variety in the Spokes Model," Discussion Papers 0405-20, Columbia University, Department of Economics.
- Morgan, John & Orzen, Henrik & Sefton, Martin, 2006. "An experimental study of price dispersion," Games and Economic Behavior, Elsevier, vol. 54(1), pages 134-158, January.
- Kristopher S. Gerardi & Adam Hale Shapiro, 2009. "Does Competition Reduce Price Dispersion? New Evidence from the Airline Industry," Journal of Political Economy, University of Chicago Press, vol. 117(1), pages 1-37, 02.
- Ambarish Chandra & Mariano Tappata, 2011. "Consumer search and dynamic price dispersion: an application to gasoline markets," RAND Journal of Economics, RAND Corporation, vol. 42(4), pages 681-704, December.
- Schwartz, Alan & Wilde, Louis L, 1985. "Product Quality and Imperfect Information," Review of Economic Studies, Wiley Blackwell, vol. 52(2), pages 251-62, April.
- Fershtman, Chaim & Fishman, Arthur, 1992.
"Price Cycles and Booms: Dynamic Search Equilibrium,"
American Economic Review,
American Economic Association, vol. 82(5), pages 1221-33, December.
- Fershtman, C. & Fishman, A., 1989. "Price Cycles And Booms Dynamic Search Equilibrium," Papers 8922, Tilburg - Center for Economic Research.
- Fershtman, C. & Fishman, A., 1989. "Price Cycles And Booms: Dynamic Search Equilibrium," Papers 1-89, Tel Aviv.
- Matthew Lewis, 2008. "PRICE DISPERSION AND COMPETITION WITH DIFFERENTIATED SELLERS -super-* ," Journal of Industrial Economics, Wiley Blackwell, vol. 56(3), pages 654-678, 09.
- Paul R. Milgrom, 1981.
"Good News and Bad News: Representation Theorems and Applications,"
Bell Journal of Economics,
The RAND Corporation, vol. 12(2), pages 380-391, Autumn.
- Paul R. Milgrom, 1979. "Good Nevs and Bad News: Representation Theorems and Applications," Discussion Papers 407R, Northwestern University, Center for Mathematical Studies in Economics and Management Science.
- Armstrong, Mark, 2006. "Price discrimination," MPRA Paper 4693, University Library of Munich, Germany.
- Ivan A. Canay, 2011. "A simple approach to quantile regression for panel data," Econometrics Journal, Royal Economic Society, vol. 14(3), pages 368-386, October.
- Waterson, Michael, 2003. "Consumers and Competition," The Warwick Economics Research Paper Series (TWERPS) 679, University of Warwick, Department of Economics.
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