A computer-readable storage medium contains instructions that cause one or more computing devices to receive a product specification data set identifying one or more items, and price data sets that include one or more items and corresponding price data. For each price data set, metric data is obtained which includes one or more market reference prices for the items in the price data set. A market value of the items is calculated for comparison to the price data in the price data set. The instructions may also cause the one or more computing devices to compare the price data in the price data set to the calculated market value to generate a comparison value. In another embodiment, metric data is obtained for each item in a product specification data set, and a market value of each item is calculated for comparison to the price data in the price data sets.