本研究考慮當一零售商銷售一組具有搭配性質之產品，在面對不確定的產品需求，且需求是同時與產品存貨水準以及價格有關的情形下，零售商的最佳訂價與訂購量。零售商銷售一項與主產品有關之互補(complementary)搭配性產品，且消費者會最大化期望效用，來選擇拜訪零售商並購買產品或放棄拜訪零售商並獲得外部購買效用(outside option)，而外部購買效用為當消費者選擇放棄拜訪零售商時，所獲得之效用。消費者在考慮是否拜訪零售商時，會優先考慮主產品，並且在購得主產品之後才會進一步考量是否購買搭配性產品。
　　本研究以一般化的分配，來建立模式並求解，雖然無法得到解析解，但是仍可以進一步對模式進行分析並獲得管理方面的意涵。在模式分析與數值分析的部分發現以下幾點的結果：一、當零售商捨棄了產品搭配的銷售方式，則主要產品的最佳訂購量會降低，最佳價格會升高。二、產品的主觀價值變異是影響價格的主要因素。三、消費者購買搭配性產品的意願提升，則主要產品的最佳訂購量會上升，最佳價格會下降。四、當模式中的參數改變，兩種產品的最佳訂購量的變動方向是相同的。

　　This paper considers a firm's optimal price and inventory policy which sells a pair of matching products and faces uncertain demand that depends on both price and inventory level. The firm sells a staple product associated with a complementary accessory product, and consumers maximize the expected utility to choose whether to visit the firm for buying the products or to consume an exogenous outside option. The outside option represents the utility that the consumer receives when he forgoes the visit. By considering the staple product first, the consumer decides whether to visit the firm or not, and then he think of the buying accessory product after receiving the staple product successfully.
　　The model is constructed to fit non-specific distribution. Although we can't obtain the analytical solution, we can analysis the model and obtain the management perspective by simplifying the specific function. Based on the numerical analysis, we find the following results: First, the optimal price of staple product will decrease and the optimal inventory level will increase when the retailer sells the staple product without the accessory product. Second, the variance of valuation is the primary factor of price. Third, as consumers' will of buying the accessory product augment, the optimal inventory level of staple product will increase and the price of staple product will decrease, even if the amount of consumers does not increase. Fourth, the optimal inventory level of two products will both increase or decrease when the parameters change.

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