I bought a Sega Rally II twin today.
The good:
Steering wheel is as good as new
Seats are pretty good
Monitors are very good
All sound & video works.
The bad:
Quite some rusty spots
The original white monitor housings have been replaced by red ones (although it looks pretty neat).
The yellow belts are gone
No force feedback (which is the biggest problem)
Cigarrette stains on the dashboard
The shifters shaft cases have a borken rotation angle.
I paid €950, so I think overall it wasn't a bad price. I won't do a full restoration at once, but over time I will restore it piece by piece when I have the time.
Here are some pics:
The broken shaft case rotation axis: