Several weeks ago I saw one of these in at flea market in Anchorage, AK. Seems like they wanted a tad over $200 for their copy.
Dirt cheap lil' five and sixguns in 22, 32 and 38 S&W could be found all over the Ozarks when I was a kid, usually for 15-50 bucks. This was 35 years ago of course. Most of us boys bought them, before we got interested handguns capable of knocking the well-house over. Fresh factory loads could be had anywhere and we shot every one of them with 'modern' loads. Several broke before we got much good out of them but not a one blew up or came unhinged.
Caution is probably the byword when dealing with these old guns, and being older and wise now I wouldn't shoot the center-fires until I was sure they were solid- and only then with cat-sneeze loads. But if you ask me, old rimfire bellyguns like those pictured here are the reason why CB caps exist.