The program of finding the best price for suppliers

Programmer services are required. You need to write a program of the next plan - there is an estimate, there are suppliers who can order goods at an estimate, and you need a program that would promptly review the list of all items required by the estimate from all possible suppliers and automatically order the necessary items. Estimates and catalogue of goods from suppliers did not change for a long time and all data are provided in the excel. I think it will not be difficult for a professional to make such a program, although of course there are about 60 possible suppliers and each has its own chablo exel. We will discuss the program with the contractor in more detail.