I have 3 drums for sale at $10.00 each. They held cleaning solution and have been powerwashed inside. Solid one piece design with two small holes in the top, I should have the threaded plugs for the holes in the top.
ah! so we're talking about the metal ones. yeah, those are quite handy.
I have access to a bunch of plastic drums that once had chemicals in them. I had thought about using them for water storage at one time but didn't want to risk chemicals leeching out of the plastic. I could also get new clean drums, 55g, 30g, 15g, and 5g - but they tend to be on the pricey side so I didn't even think to bring it up.