A Network Model of Price Dispersion
AbstractWe analyze a model of price competition ? la Bertrand in a network environment. Firms only have a limited information on the structure of network: they know the number of potential customers they can attract and the degree distribution of customers. This incomplete information framework stimulates the use of Bayesian-Nash equilibrium. We find that, if there are customers only linked to one firm, but not all of them are, then an equilibrium in randomized strategies fails to exist. Instead, we find a symmetric equilibrium in randomized strategies. Finally, we test our results on US gasoline data. We find empirical evidence consistent with firms playing random strategies.
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Bibliographic InfoPaper provided by Fondazione Eni Enrico Mattei in its series Working Papers with number 2008.28.
Date of creation: Mar 2008
Date of revision:
Bertrand Competition; Bayesian- Nash Equilibrium; Mobility Index;
Find related papers by JEL classification:
- D43 - Microeconomics - - Market Structure and Pricing - - - Oligopoly and Other Forms of Market Imperfection
- D85 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Network Formation
- L11 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Production, Pricing, and Market Structure; Size Distribution of Firms
This paper has been announced in the following NEP Reports:
- NEP-ALL-2008-09-13 (All new papers)
- NEP-COM-2008-09-13 (Industrial Competition)
- NEP-IND-2008-09-13 (Industrial Organization)
- NEP-MIC-2008-09-13 (Microeconomics)
- NEP-NET-2008-09-13 (Network Economics)
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- Kuksov, Dmitri, 2006. "Search, common knowledge, and competition," Journal of Economic Theory, Elsevier, vol. 130(1), pages 95-108, September.
- Rachel E. Kranton & Deborah F. Minehart, 2001. "A Theory of Buyer-Seller Networks," American Economic Review, American Economic Association, vol. 91(3), pages 485-508, June.
- Venkatesh Bala & Sanjeev Goyal, 2000. "A Noncooperative Model of Network Formation," Econometrica, Econometric Society, vol. 68(5), pages 1181-1230, September.
- 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.
- Andrea Galeotti & Sanjeev Goyal & Matthew O. Jackson & Fernando Vega-Redondo & Leeat Yariv, 2008.
Economics Working Papers
ECO2008/07, European University Institute.
- Stahl, Dale O., 1996. "Oligopolistic pricing with heterogeneous consumer search," International Journal of Industrial Organization, Elsevier, vol. 14(2), pages 243-268.
- Jackson, Matthew O. & Yariv, Leeat, 2006.
"Diffusion of Behavior and Equilibrium Properties in Network Games,"
1264, California Institute of Technology, Division of the Humanities and Social Sciences.
- Matthew O. Jackson & Leeat Yariv, 2007. "Diffusion of Behavior and Equilibrium Properties in Network Games," American Economic Review, American Economic Association, vol. 97(2), pages 92-98, May.
- Michael R. Baye & John Morgan & Patrick Scholten, 2004.
"Price Dispersion in the Small and in the Large: Evidence from an Internet Price Comparison Site,"
2004-03, Indiana University, Kelley School of Business, Department of Business Economics and Public Policy.
- Michael R. Baye & John Morgan & Patrick Scholten, 2004. "Price Dispersion In The Small And In The Large: Evidence From An Internet Price Comparison Site," Journal of Industrial Economics, Wiley Blackwell, vol. 52(4), pages 463-496, December.
- Schluter, Christian, 1998. "Statistical inference with mobility indices," Economics Letters, Elsevier, vol. 59(2), pages 157-162, May.
- Michael R. Baye & John Morgan & Patrick Scholten, 2006. "Information, Search, and Price Dispersion," Working Papers 2006-11, Indiana University, Kelley School of Business, Department of Business Economics and Public Policy.
- Michael R. Baye & John Morgan, 2001. "Information Gatekeepers on the Internet and the Competitiveness of Homogeneous Product Markets," American Economic Review, American Economic Association, vol. 91(3), pages 454-474, June.
- Shorrocks, A F, 1978. "The Measurement of Mobility," Econometrica, Econometric Society, vol. 46(5), pages 1013-24, September.
- Steven Salop & Joseph Stiglitz, 1977.
"Bargains and ripoffs: a model of monopolistically competitive price dispersion,"
Special Studies Papers
94, Board of Governors of the Federal Reserve System (U.S.).
- Salop, Steven & Stiglitz, Joseph E, 1977. "Bargains and Ripoffs: A Model of Monopolistically Competitive Price Dispersion," Review of Economic Studies, Wiley Blackwell, vol. 44(3), pages 493-510, October.
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