文章基本信息

标题：The option of joint purchase in vertically differentiated markets
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作者：Jean J. GABSZEWICZ ; Xavier Y. WAUTHY
期刊名称：CORE Discussion Papers / Center for Operations Research and Econometrics (UCL), Louvain
出版年度：2001
卷号：2001
出版社：Center for Operations Research and Econometrics (UCL), Louvain
摘要：Within the framework proposed by Mussa and Rosen (1978) for modelling quality diﬀerentiation, we allow consumers to buy simulta- neously diﬀerent variants of the same indivisible good. We call this the ”joint purchase option”. We show that this option dramatically aﬀects price competition: while a unique equilibrium always prevails when consumers are assumed to make mutually exclusive purchases, either uniqueness, or multiplicity, or absence of price equilibrium arise when the joint purchase option is opened depending on the utility attached to joint purchase relative to separate purchases.