Abstract: Computer based systems for illustrating product data are disclosed. The systems include an input interface wherein a user selects one or more products, at least one database that includes product data of one the products, a program in communication with the input interface and the at least one database, wherein the program retrieves selected product data for user selected products, and an output interface in communication with the program that illustrates at least some of the selected product data. In the disclosed systems, the user may adjust at least some of the product data illustrated in the output interface to generate additional product data. Also disclosed are computer-based methods for generating a report that includes product data of one or more products, computer generated reports, and methods of using a computer to compare product data.