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Author Info

  • Michael R. Baye

    (Kelley School of Business, Indiana University)

  • John Morgan

    (Haas School of Business & Department of Economics, UC Berkeley)

Abstract

We model a homogeneous product environment where identical e-retailers endogenously engage in both brand advertising (to create loyal customers) and price advertising (to attract 'shoppers'). Our analysis allows for 'cross-channel' effects; indeed, we show that price advertising is a substitute for brand advertising. In contrast to models where loyalty is exogenous, these crosschannel effects lead to a continuum of symmetric equilibria; however, the set of equilibria converges to a unique equilibrium as the number of potential e-retailers grows arbitrarily large. Price dispersion is a key feature of all of these equilibria, including the limit equilibrium. While each firm finds it optimal to advertise its brand in an attempt to 'grow' its base of loyal customers, in equilibrium, branding (1) reduces firm profits, (2) increases prices paid by loyals and shoppers, and (3) adversely affects gatekeepers operating price comparison sites. Branding also tightens the range of prices and reduces the value of the price information provided by a comparison site. Using data from a price comparison site, we test several predictions of the model.

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File URL: http://128.118.178.162/eps/mic/papers/0504/0504004.pdf
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Bibliographic Info

Paper provided by EconWPA in its series Microeconomics with number 0504004.

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Length: 53 pages
Date of creation: 14 Apr 2005
Date of revision:
Handle: RePEc:wpa:wuwpmi:0504004

Note: Type of Document - pdf; pages: 53
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Web page: http://128.118.178.162

Related research

Keywords: Price dispersion;

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References

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  12. Michael R. Baye & John Morgan & Patrick Scholten, 2004. "Temporal Price Dispersion: Evidence from an Online Consumer Electronics Market," Working Papers 2004-04, Indiana University, Kelley School of Business, Department of Business Economics and Public Policy.
  13. Erik Lehmann, 2003. "Pricing Behavior on the WEB: Evidence from Online Travel Agencies," Empirica, Springer, vol. 30(4), pages 379-396, December.
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  18. Glenn Ellison & Sara Fisher Ellison, 2004. "Search, Obfuscation, and Price Elasticities on the Internet," NBER Working Papers 10570, National Bureau of Economic Research, Inc.
  19. 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.
  20. Shilony, Yuval, 1977. "Mixed pricing in oligopoly," Journal of Economic Theory, Elsevier, vol. 14(2), pages 373-388, April.
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  25. Nitzan, Shmuel, 1994. "Modelling rent-seeking contests," European Journal of Political Economy, Elsevier, vol. 10(1), pages 41-60, May.
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  31. 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.
  32. Fiona Scott Morton & Florian Zettelmeyer & Jorge Silva-Risso, 2001. "Internet Car Retailing," NBER Chapters, in: E-commerce, pages 501-519 National Bureau of Economic Research, Inc.
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