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Review of Economic Studies Vol. 66 No. 1 1999

Price Discrimination by a Many-Product Firm

Mark Armstrong1,2

1 Nuffield College, Oxford · 2 #N#Nuffield College, Oxford#N#

Abstract

Determining the optimal selling strategy for a multiproduct firm facing consumers with unobservable tastes is a difficult task. This paper aims to show how almost optimal nonlinear tariffs can often be found when the number of products is large. Moreover, such tariffs take a simple form: (i) when taste parameters are independently distributed across products, the almost optimal tariff is a single cost-based two-part tariff which can extract virtually all consumer surplus; (ii) when tastes are correlated across products, perhaps because of income differences across consumers, the almost optimal tariff can be implemented as a menu of two-part tariffs each of which has prices proportional to marginal costs.

DOI
10.1111/1467-937x.00082
Volume
66
Issue
1
Pages
151-168
Language
en
Sources
bibtex:phds-export.bib openalex crossref

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