Study of Pricing When the Monopolist Sells the Durable Goods Based on the Consumer's Type

In this paper,we construct the utility model of the different type consumers who buy the durable goods in two periods.Derive the new and used durable goods' coverage.Then we discuss the optimal sale's pricing of the durable goods monopolist in the two periods and analyse their features.We obtain some conclusions as follow:(1) the optimal sale's pricing of the durable goods monopolist decrease first,then increase when the durability increase in the two periods;But the implicit rental price is always decreasing in the first period,and the used durable goods' selling price is always increasing in the second periond.(2)When selling,the total profits of the two perionds is decreasing as the durability increases.So the monopolist have incentives to decrease their products' durability.(3)When the monopolist setting the optimal sale price,the new durable goods coverage decreases in the first periond as the durability increases,and the new durable goods coverage is higher in the first period than in the second period.At last,we prove that the conclusions are robust by some real life examples.