That's a great price if it includes the undercarriage, joystick, and the loader. ($2000 less than full price) If it's just the loader without the rest, it's not a good deal. . .just acceptable.
I'd say that's an excellent deal for anyone who wants to install their own joystick. I think I'd check to see what a new joystick and plumbing would cost and evaluate the deal based on that. An aftermarket joystick should also work just fine and be very inexpensive. I would say it's a great deal for spare parts, but these things are made so well that you'll probably never break one anyhow.