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Third-degree price discrimination, quality choice, and welfare

  • Ikeda, Takeshi
  • Toshimitsu, Tsuyoshi

Employing an endogenous quality choice model, we reconsider the effect on welfare of monopolistic third-degree price discrimination. We prove that price discrimination always enhances welfare, mainly because the quality improvement owing to price discrimination increases consumer surplus. Moreover, we show that third-degree price discrimination benefits all parties, including consumers in the higher priced market if the preference differences between markets are sufficiently large.

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File URL: http://www.sciencedirect.com/science/article/B6V84-4X97CTC-2/2/51e1025a03dea281cb3c3949bdee48f9
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Article provided by Elsevier in its journal Economics Letters.

Volume (Year): 106 (2010)
Issue (Month): 1 (January)
Pages: 54-56

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Handle: RePEc:eee:ecolet:v:106:y:2010:i:1:p:54-56
Contact details of provider: Web page: http://www.elsevier.com/locate/ecolet

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  1. Schwartz, Marius, 1990. "Third-Degree Price Discrimination and Output: Generalizing a Welfare Result," American Economic Review, American Economic Association, vol. 80(5), pages 1259-62, December.
  2. Schmalensee, Richard, 1981. "Output and Welfare Implications of Monopolistic Third-Degree Price Discrimination," American Economic Review, American Economic Association, vol. 71(1), pages 242-47, March.
  3. Malueg, D.A. & Schwartz, M., 1993. "Parallel Imports, Demand Dispersion and International Price Discrimination," Papers 93-6, U.S. Department of Justice - Antitrust Division.
  4. Mussa, Michael & Rosen, Sherwin, 1978. "Monopoly and product quality," Journal of Economic Theory, Elsevier, vol. 18(2), pages 301-317, August.
  5. Takeshi Ikeda & Tatsuhiko Nariu, 2009. "Third-Degree Price Discrimination in the Presence of Asymmetric Consumption Externalities," Journal of Industry, Competition and Trade, Springer, vol. 9(3), pages 251-261, September.
  6. Liu, Qihong & Serfes, Konstantinos, 2005. "Imperfect price discrimination in a vertical differentiation model," International Journal of Industrial Organization, Elsevier, vol. 23(5-6), pages 341-354, June.
  7. Thisse, Jacques-Francois & Vives, Xavier, 1988. "On the Strategic Choice of Spatial Price Policy," American Economic Review, American Economic Association, vol. 78(1), pages 122-37, March.
  8. Varian, Hal R, 1985. "Price Discrimination and Social Welfare," American Economic Review, American Economic Association, vol. 75(4), pages 870-75, September.
  9. Kenneth S. Corts, 1998. "Third-Degree Price Discrimination in Oligopoly: All-Out Competition and Strategic Commitment," RAND Journal of Economics, The RAND Corporation, vol. 29(2), pages 306-323, Summer.
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