Number of sellers, average prices, and price dispersion

Abstract A variety of models provide differing predictions regarding the effect of an increase in the number of competitors in a market (seller density) on prices and price dispersion. We review different approaches to generating equilibrium price dispersion and then empirically estimate the relationship between seller density, average product price and price dispersion in the retail gasoline industry using four unique gasoline price data sets. Controlling for station-level characteristics, we find that an increase in station density consistently decreases both price levels and price dispersion across four geographical areas.

[1]  Dale O. Stahl,et al.  Oligopolistic pricing with heterogeneous consumer search , 1996 .

[2]  André de Palma,et al.  Oligopolistic Competition and the Optimal Provision of Products , 1995 .

[3]  Dale O. Stahl,et al.  Oligopolistic Pricing with Sequential Consumer Search , 1989 .

[4]  André de Palma,et al.  Product diversity in asymmetric oligopoly: is the quality of consumer goods too low? , 2003 .

[5]  H. Marvel,et al.  The Economics of Information and Retail Gasoline Price Behavior: An Empirical Analysis , 1976, Journal of Political Economy.

[6]  Marcel Cohen.  Linking price dispersion to product differentiation - incorporating aspects of customer involvement , 1998 .

[7]  A. F. AdamsIII.  Search Costs and Price Dispersion in a Localized, Homogeneous Product Market: Some Empirical Evidence , 1997 .

[8]  J. Perloff,et al.  Equilibrium with Product Differentiation , 1984 .

[9]  J. Dana,et al.  Equilibrium Price Dispersion Under Demand Uncertainty: The Roles of Costly Capacity and Market Structure , 1999 .

[10]  David A. Wise,et al.  Price Differences in almost Competitive Markets , 1979 .

[11]  Andrea Shepard.  Price Discrimination and Retail Configuration , 1991, Journal of Political Economy.

[12]  Kathy J. Hayes,et al.  Is Airline Price Dispersion the Result of Careful Planning or Competitive Forces? , 1998 .

[13]  K. Judd,et al.  EQUILIBRIUM PRICE DISPERSION , 1983 .

[14]  Theresa Van Hoomissen.  Price Dispersion and Inflation: Evidence from Israel , 1988 .

[15]  Paulo Guimarães.  Search Intensity in Oligopoly , 1996 .

[16]  I. Png,et al.  Service Time Competition , 1994 .

[17]  Observed price dispersion: Product heterogeneity, regional markets, or local market power? , 1994 .

[18]  Larry Samuelson,et al.  Search costs and prices , 1992 .

[19]  Jennifer F. Reinganum.  A Simple Model of Equilibrium Price Dispersion , 1979, Journal of Political Economy.

[20]  John M. Barron,et al.  A theory of quality‐related differences in retail margins: why there is a ‘premium’ on premium gasoline , 2000 .

[21]  R. Preston McAfee,et al.  Discrete Equilibrium Price Dispersion , 1983, Journal of Political Economy.

[22]  Patrick Paul Walsh,et al.  Modelling Price Dispersion as an Outcome of Competition in the Irish Grocery Market , 2003 .

[23]  Joris Pinkse,et al.  Spatial Price Competition: A Semiparametric Approach , 2002 .

[24]  Severin Borenstein,et al.  Competition and Price Dispersion in the U.S. Airline Industry , 1994, Journal of Political Economy.

[25]  Simon P. Anderson,et al.  Pricing, product diversity, and search costs: a Bertrand-Chamberlin-Diamond model , 1999 .

[26]  Stephen J. Schmidt.  Market structure and market outcomes in deregulated rail freight markets , 2001 .

[27]  Alan T. Sorensen.  Equilibrium Price Dispersion in Retail Markets for Prescription Drugs , 2000, Journal of Political Economy.

[28]  M. Waterson,et al.  Multiproduct Firms' Pricing Behaviour in the Italian Grocery Trade , 1997 .

[29]  Robert W. Rosenthal,et al.  A Model in Which an Increase in the Number of Sellers Leads to a Higher Price , 1980 .

[30]  Douglas S. West,et al.  Price Dispersion in an Automobile Insurance Market , 1986, Journal of Political Economy.

[31]  Joseph E. Stiglitz,et al.  Competition and the Number of Firms in a Market: Are Duopolies More Competitive than Atomistic Markets? , 1987, Journal of Political Economy.

[32]  H. Varian.  A Model of Sales , 1980 .

[33]  J. Miguel Villas-Boas,et al.  Models of Competitive Price Promotions: Some Empirical Evidence from the Coffee and Saltine Crackers Markets , 1995 .

[34]  Simon P. Anderson,et al.  Consumer Information and Firm Pricing: Negative Externalities from Improved Information , 2000 .