I bought shot from these guys. I couldn't believe that shipping was free, but when it came I understood.
http://www.rotometals.com/product-p/...eclaim_bag.htm
It was shipped by regular post office in their fixed rate priority boxes where it didn't make any difference how much it weighed, as long as it fit in the box. My mailman wasn't too happy about it, but it was a great deal and perfect for ballast bars!!! BTW, it only took two days from my order, all the way across the country.....