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  5. On the Alignment of Consumer Surplus and Total Surplus Under Competitive Price Discrimination

蝌蚪网 Journal:
Microeconomics

ISSN 1945-7669 (Print) | ISSN 1945-7685 (Online)

On the Alignment of Consumer Surplus and Total Surplus Under Competitive Price Discrimination

  • Dirk Bergemann
  • Benjamin Brooks
  • Stephen Morris
蝌蚪网 Journal: Microeconomics (Forthcoming)

Abstract

Producers of heterogeneous goods with heterogeneous costs compete in prices. When producers know their own production costs and the consumer knows their values, consumer surplus and total surplus are aligned: the information structure and equilibrium that maximize consumer surplus also maximize total surplus. We report when alignment extends to the case where either the consumer is uncertain about their own values or producers are uncertain about their own costs. Less information for either producers or consumer may intensify competition in a way that benefits the consumer but results in inefficient production. We illustrate this within the Hotelling duopoly.

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