Vendor Evaluation Score ...???

Hi MM Gurus,

My client requires score calculationfor the vendor evaluation i.e., it has to show the working how it has arrived at the final score, to be clear systems works automatically and displays the final score based on certain main and sub criteria that working has to be shown in a table format

and what is mean by Market Price.. where can i get this in Vendor Evaluation.

Thanks in Advance,

Anthyodaya.