You might want to place a parts wanted ad in the classifieds section of the forum. Problem with used ones is how worn they are and if they have enough thickness to be turned.
Rock Auto has a closeout on Raybestos drums for $38.79 right now. Last drums I bought I got locally at CJ Ponyparts, were listed for a Mustang. I needed some that day because my car was going through state safety inspection and the mechanic wouldn't pass them. They were Chinese but checked out ok and worked. Strange thing was both were the same part number but where they had the max wear dimension one read "Max dia. 10.090" and the other said " Max dia. 10.060"! The guy at the inspection station just shook his head...
I have a set of that I took off. They are 10 x 2 /12 front drums bought at Napa in the early 90's. I think I paid about $75 each. I checked and they are $99.99 each now. Car has been parked for the last 15 years. The drums measure right at 10" and have never been turned. You can have them for $20 + shipping.