I have searched high and low around here for RO lump charcoal, with no success... until now! There is a hardware store chain called "Do It Best", and there happens to be one located a couple of miles from my house. They don't stock it in the store, but will order it, either by calling them direct or ordering from the website, where it can be shipped to the store of your choice. Anywho, 20 lb bags @ $13 a pop... not the cheapest price I've heard, but it's the only game in town. I'll have 4 bags tomorrow.