The simplest thing to do is to call your local scrap yard and get them to quote you a price. This fluctuates with the market so the sooner the better.
Well the best thing I can suggest you call your nearest scrap yard they will give you the price by the ton and I think it is down right now. You have to call the scrap yard everyday for a price, It fluxgates every day. 20 to 50 bucks check with your local yard prices change daily.