Journal Article

Competitive Non-linear Pricing and Bundling

Mark Armstrong and John Vickers

in The Review of Economic Studies

Published on behalf of Review of Economic Studies Ltd

Volume 77, issue 1, pages 30-60
Published in print January 2010 | ISSN: 0034-6527
Published online January 2010 | e-ISSN: 1467-937X | DOI:
Competitive Non-linear Pricing and Bundling

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We examine competitive non-linear pricing in a model in which consumers have heterogeneous and elastic demands and can buy from more than one supplier. It is an equilibrium for firms to offer a menu of efficient two-part tariffs, where the discount for one-stop shopping is such that the elasticity of “demand for two-stop shopping” equals two. Compared with linear pricing, non-linear pricing tends to raise profit but harm consumers when: (i) demand is elastic, (ii) there is heterogeneity in consumer demand, (iii) consumers incur shopping costs when buying from more than one firm, and (iv) a consumer's brand preference for one product is correlated with her brand preference for another product. Non-linear pricing is more likely to lead to welfare gains when (iii) and (iv) hold, but (ii) does not.

Journal Article.  14560 words.  Illustrated.

Subjects: Economics

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