An empirical model of search with vertically differentiated products
This paper presents a non-sequential search model that allows for vertical product differentiation. In the unique symmetric equilibrium firms with different characteristics draw utilities from a common utility distribution, resulting in asymmetric price distributions. The model therefore provides a theoretical rationale for explaining price dispersion as a result of quality differences and search frictions together. More specifically, the model can explain the frequent and asymmetric price changes reported in several empirical papers, but also why some firms have persistently higher prices than others. Using the equilibrium conditions derived from the model, we show how to estimate search costs by maximum likelihood using only prices. The method is applied to a data set of prices for grocery items from supermarkets in the UK. Estimates reveal that most of the observed price variation can be explained by supermarket heterogeneity and that the estimated amount of search is low in this market. We show that ignoring vertical product differentiation results in an overestimation of search costs. Moreover, estimated search costs using a basket of organic items are on average higher than that of a similar non-organic basket. We also simulate how changes in search costs will affect behavior of stores and consumers.
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Volume (Year): 42 (2011)
Issue (Month): 4 (December)
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- Daniel Hosken & David Reiffen, 2004. "Patterns of Retail Price Variation," RAND Journal of Economics, The RAND Corporation, vol. 35(1), pages 128-146, Spring.
- 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.
- Michael R. Baye & John Morgan & Patrick Scholten, 2004. "Price Dispersion in the Small and in the Large: Evidence from an Internet Price Comparison Site," Working Papers 2004-03, Indiana University, Kelley School of Business, Department of Business Economics and Public Policy.
- repec:rje:randje:v:37:y:2006:2:p:416-430 is not listed on IDEAS
- Moraga-González, José Luis & Wildenbeest, Matthijs R., 2008.
"Maximum likelihood estimation of search costs,"
European Economic Review,
Elsevier, vol. 52(5), pages 820-848, July.
- Philip A. Haile & Han Hong & Matthew Shum, 2004.
"Nonparametric Tests for Common Values in First-Price Sealed-Bid Auctions,"
2004.149, Fondazione Eni Enrico Mattei.
- Philip A. Haile & Han Hong & Matthew Shum, 2003. "Nonparametric Tests for Common Values at First-Price Sealed-Bid Auctions," NBER Working Papers 10105, National Bureau of Economic Research, Inc.
- Philip A. Haile & Han Hong & Matthew Shum, 2003. "Nonparametric Tests for Common Values in First-Price Sealed-Bid Auctions," Cowles Foundation Discussion Papers 1445, Cowles Foundation for Research in Economics, Yale University.
- 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.
- Maarten C. W. Janssen & José Luis Moraga-González, 2004. "Strategic Pricing, Consumer Search and the Number of Firms," Review of Economic Studies, Oxford University Press, vol. 71(4), pages 1089-1118.
- Howard Smith, 2006. "Store characteristics in retail oligopoly," RAND Journal of Economics, RAND Corporation, vol. 37(2), pages 416-430, 06.
- Saul Lach, 2002.
"Existence And Persistence Of Price Dispersion: An Empirical Analysis,"
The Review of Economics and Statistics,
MIT Press, vol. 84(3), pages 433-444, August.
- Saul Lach, 2002. "Existence and Persistence of Price Dispersion: an Empirical Analysis," NBER Working Papers 8737, National Bureau of Economic Research, Inc.
- repec:rje:randje:v:37:y:2006:2:p:257-275 is not listed on IDEAS
- Asher Wolinsky, 1986. "True Monopolistic Competition as a Result of Imperfect Information," The Quarterly Journal of Economics, Oxford University Press, vol. 101(3), pages 493-511.
- Ali Hortaçsu & Chad Syverson, 2004. "Product Differentiation, Search Costs, and Competition in the Mutual Fund Industry: A Case Study of S&P 500 Index Funds," The Quarterly Journal of Economics, Oxford University Press, vol. 119(2), pages 403-456.
- Matthew Lewis, 2008. "PRICE DISPERSION AND COMPETITION WITH DIFFERENTIATED SELLERS -super-," Journal of Industrial Economics, Wiley Blackwell, vol. 56(3), pages 654-678, 09.
- Morgan, Peter & Manning, Richard, 1985. "Optimal Search," Econometrica, Econometric Society, vol. 53(4), pages 923-944, July.
- Han Hong & Matthew Shum, 2006. "Using price distributions to estimate search costs," RAND Journal of Economics, RAND Corporation, vol. 37(2), pages 257-275, 06.
- Yingyao Hu & Matthew Shum, 2007.
"Estimating First-Price Auctions with an Unknown Number of Bidders: A Misclassification Approach,"
Economics Working Paper Archive
541, The Johns Hopkins University,Department of Economics.
- An, Yonghong & Hu, Yingyao & Shum, Matthew, 2010. "Estimating first-price auctions with an unknown number of bidders: A misclassification approach," Journal of Econometrics, Elsevier, vol. 157(2), pages 328-341, August.
- Babur de los Santos, 2008.
"Consumer Search on the Internet,"
2008-06, Indiana University, Kelley School of Business, Department of Business Economics and Public Policy.
- Mark Armstrong, 2008.
"Interactions between Competition and Consumer Policy,"
Competition Policy International, vol. 4.
- Armstrong, Mark, 2008. "Interactions between competition and consumer policy," MPRA Paper 7258, University Library of Munich, Germany.
- Patrick Bajari & Stephanie Houghton & Steve Tadelis, 2006. "Bidding for Incomplete Contracts: An Empirical Analysis," NBER Working Papers 12051, National Bureau of Economic Research, Inc.
- Martin Pesendorfer, 2002. "Retail Sales: A Study of Pricing Behavior in Supermarkets," The Journal of Business, University of Chicago Press, vol. 75(1), pages 33-66, January.
- Howard Smith, 2004. "Supermarket Choice and Supermarket Competition in Market Equilibrium," Review of Economic Studies, Oxford University Press, vol. 71(1), pages 235-263.
- Burdett, Kenneth & Judd, Kenneth L, 1983. "Equilibrium Price Dispersion," Econometrica, Econometric Society, vol. 51(4), pages 955-969, July.
- Matt Shum & Phil Haile & Han Hong, 2003. "Nonparametric Tests for Common Values in First-Price Auctions," Economics Working Paper Archive 501, The Johns Hopkins University,Department of Economics.
- Stahl, Dale O, II, 1989. "Oligopolistic Pricing with Sequential Consumer Search," American Economic Review, American Economic Association, vol. 79(4), pages 700-712, September.
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