A system provides a way for understanding the benefits of a plurality of products based on a viewpoint from a customer that prefers a specific product. The system includes a selection unit for receiving a selection of a specific commodity among a plurality of commodities, a generation unit for generating a benefit model in which a benefit value of a specific commodity becomes the maximum, a calculation unit for calculating benefit values of the commodities using the benefit model, and a display unit for displaying the benefit values of the commodities.