I've ordered a sit down 20" Bailey for under $4000.00, although I would prefer to have a frame, I don't have room for one, so a sit down will have to do. Bailey's have been around for quite a number of years, and they're machines have a fairly good reputation, although they're not a "long arm" but that's okay with me, 20" is a long more room than I have now. LOL
I also would be leary of a long arm that hasn't been around long enough to have all the "bugs" worked out.