They are very difficult to find in my area as well! I thought it was going to be easy with all the food type processors etc in my area, but I learned a lot of them have switched over to plastic drums. Ask friends to keep an eye out, I just happened to mention to someone at work how hard it was to find a drum and the guy was like really, how many do you want? LOL Had one in a couple days.
If you get one that needs burned out, you don't necessarily have to build a stick fire in it, you can get a propane weed burner which is probably even easier I'd have to guess. I burned a couple wooden pallets that didn't even touch the epoxy liner and I ended using a third option and had the barrel sandblasted for $20.
If you can't find one with a removable lid, cut the closed lid off and use a weber grill lid or walmart also sells an inexpensive uniflame brand round grill that you can make the lid fit on your drum.