The Demand for Commodity Packages: The Case of Telephone Custom Calling Features
研究两种定制呼叫服务的需求，消费者可单独购买或购买折扣套餐，基于离散选择模型分析购买选项，并模拟价格和折扣变化对收入的影响。
The demand for two custom calling services is investigated. The services may be bought individually or in a discounted package. A micro-theory based on discrete choice model is formulated that explicitly accounts for these purchase options. The model is estimated assuming both dependence and independence of the unobservable choice-influencing variables. The estimated parameters are used to simulate the revenue impact of price and discount changes. Copyright 1993 by MIT Press.