"Worked to death" is probably about right. The company may be old, but it's not huge, either, so even newer bikes are not that common on the used market. But I have seen some older ones restored and whatnot.

I've got an oldish front-loading trike, and am currently trying to figure out just how old it is.

Edit: Just got a response back from Worksman: "anywhere from appx 1970- 1985"

http://tampa.craigslist.org/psc/bfs/840223210.html
http://denver.craigslist.org/bik/842458923.html
http://ratrodbikes.com/forum/viewtop...orksman#p78809
http://ratrodbikes.com/forum/viewtop...orksman#p76428