Upgrading the products for the extension of their life is the effective strategy in construction of Resources-Recycling society. Actually the upgradable products such as User-made PC (PC; personal computer) are come into the market. In this paper, we try to analyze the conditions that the upgradable products are spread by means of the consumer's choice model. The result of the analysis shows that to give information on the products to the end-users, to increase their skills in using the upgradable products and to improve services to support them promote their decision to choose the upgradable products.