Blacksmithing is trendy now and so there's a lively market for them. People collect them and some people are going to be all about what old ones are worth. If you just want to work on one, HF is probably a good way to get started. It's kind of inevitable, I think, that you'll have to deal with some guy that likes anvils to get a good one made in the USA years ago and all that.
I've had a rotating jaws vise with that flat spot on it forever. Made in China. For very occasional blacksmithing that works fine.