I saw this the other day. I didn’t even remember USA produced them back in the day.
I have never seen one on Ebay that I can recall.
Lionel produced one also. It was rather different and had more character…it only had the freight door on one side. It was a bit shorter, and added a look of something you would only find on some short line where the caboose might have been built in the railroad’s own shops. We have four of them, and the crews all seem to enjoy having them “Bringing up the rear” on their trains. Something different from the usual offerings, usually modelled after the Colorado narrow gauge lines.
Fweddy