為了解決與賣方和消費者決策相關的這些現象，我們建立了消費者剩餘模型，以在產品有時效性的條件和消費者為策略性消費者的情況下，找到最優折扣深度和最優折扣頻率。我們使用該模型分析具時效性的產品和折扣深度和折扣頻率的不同情況。 ;When seller face strategic consumers in the market, he has to make several important decisions to support his business, some of the important decisions are the discount frequency and discount depth that he wants to provide in order to maximize his profit. In our daily life, we often see different kinds of promotions when we purchase goods especially if our product is going to be obsolescent. The most difficult choice for both seller and consumer is : which one to choose? Deep but less frequent discount or little but frequently discount? More importantly, these strategies are not just strategies, sellers use these strategies to change the consumer’s utility to the product. Usually, people prefer deep but less frequent discount because the product is durable. However, if the product is going to be obsolescent, and we assume seller will make a discount as time goes by, then how do we know which method is more profitable both for seller and consumer? To address this phenomenon related to both seller’s and consumer’s decision, we develop a model of consumer’s surplus to find the optimal discount depth and optimal discount frequency under the situation which the product is obsolescent and the consumer is strategic. We use the model to analyze the different cases to the obsolescent product and discount depth and discount frequency.
