Price discrimination with divisible goods

This paper studies second-degree price discrimination (SPD) in cases involving products with divisible quantities and sold in many presentations (carbonated soft drink, beer, packaged bread, ready-to-eat cereals, laundry products, etc.). Differently from the standard case, consumers may have the opt...

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Detalles Bibliográficos
Autor principal: Cont, Walter Alberto
Formato: Objeto de conferencia
Lenguaje:Inglés
Publicado: 2012
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Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/173773
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Sumario:This paper studies second-degree price discrimination (SPD) in cases involving products with divisible quantities and sold in many presentations (carbonated soft drink, beer, packaged bread, ready-to-eat cereals, laundry products, etc.). Differently from the standard case, consumers may have the option to choose more than one package when comparing different product presentations; therefore, standard SPD may not cover all self-selection constraints. We solve an extended SPD problem (ESPD) and characterize the solution for two types of preferences. As in SPD, the seller provides the efficient quantity to high-WTP consumers and introduces inefficiencies in packages designed for low-WTP consumers. But the distortion is less than that suggested by SPD, provided that the seller attends both consumer types. Closing the market for low-WTP consumers (when SPD suggests to keep it open) is also a possibility if the two distortions introduced in the ESPD -the standard trade off between inefficiency and consumer surplus, and the n-arbitration constraint for high-WTP consumers- are too costly to the seller. Given the possibility for high-WTP consumers to consume more than one unit of small packages, the seller offers deeper quantity discounts, provided that he finds profitable to sell both consumer types.