The Optimality of Upgrade Pricing

Dirk Bergemann, Alessandro Bonatti, Andreas Haupt and Alex Smolin
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Andreas Haupt: Institute for Data, Systems, and Society, MIT

No 2290, Cowles Foundation Discussion Papers from Cowles Foundation for Research in Economics, Yale University

Abstract: We consider a multiproduct monopoly pricing model. We provide sufficient conditions under which the optimal mechanism can be implemented via upgrade pricing-a menu of product bundles that are nested in the strong set order. Our approach exploits duality methods to identify conditions on the distribution of consumer types under which (a) each product is purchased by the same set of buyers as under separate monopoly pricing (though the transfers can be different), and (b) these sets are nested. We exhibit two distinct sets of sufficient conditions. The first set of conditions is given by a weak version of monotonicity of types and virtual values, while maintaining a regularity assumption, i.e., that the product-by-product revenue curves are singlepeaked. The second set of conditions establishes the optimality of upgrade pricing for type spaces with monotone marginal rates of substitution (MRS)-the relative preference ratios for any two products are monotone across types. The monotone MRS condition allows us to relax the earlier regularity assumption. Under both sets of conditions, we fully characterize the product bundles and prices that form the optimal upgrade pricing menu. Finally, we show that, if the consumer's types are monotone, the seller can equivalently post a vector of single-item prices: upgrade pricing and separate pricing are equivalent.

Keywords: Revenue Maximization; Mechanism design; Strong duality; Upgrade pricing (search for similar items in EconPapers)
JEL-codes: D42 D82 (search for similar items in EconPapers)
Pages: 27 pages
Date: 2021-07
New Economics Papers: this item is included in nep-com, nep-des and nep-mic
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Related works:
Working Paper: The Optimality of Upgrade Pricing (2021)
Working Paper: The Optimality of Upgrade Pricing (2021)
Working Paper: The Optimality of Upgrade Pricing (2021)
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