I am bidding on a project. Project is sizeable and in the US.

Project volumes for scrap:

5000t of iron
150t of copper
150t of stainless



What is the best resource site for spot prices and to classify the scrap that is on the project. Reason being, I have a scrap yard prepared to buy, but I want to run his rates next to the market?

Eagerly waiting for replies. Thanks,