Abstract: A bid evaluation tool is provided for evaluating proposed bids for commodity sales contracts. The tool displays historical price data and forecasts in a graph. A user of the tool defines a date range for a proposed contract by entering starting and ending dates for the contract. The tool analyzes price data for the date range and generates a corresponding proposed bid for the date range. A bid window may be used to gather user inputs for the tool. The user can select between multiple bid pricing models for the bid evaluation tool to use when processing the price data to produce the proposed bid. Bid models for the tool include models such as a flat average model, a linear fit model, and an offset model. The user can adjust which historical data is included in the graph and can select which data set is used to generate bids.