This is of course only my opinion, but first is 215k miles high mileage?
secondly, it wholly depends on the type of servicing during those miles, which is unknown to you. At worst, this may be nil, not even an oil change, but it's unlikely. Most people, in the first 5 - 10 years of a prestige car like an 80, will ensure at the least, regular normal maintenance.
the engine is known to be good for 1,000,000km, but that could only be achieved with essential maintenance.
if it sounds good and drives well, then I would consider taking the gamble.
the problem areas will be what I consider to be disposables, meaning front wheel bearings, CV joints, front axle oil seals, and other such peripherals. Even with "maintenance" these are likely to be suspect on any 80, well cared for or otherwise.
I think you should be ready to have to do these, whatever condition the car is in.
For example, if I were to put a for sale sign in my car today, I can't offer any paper proof of maintenance whatsoever. By the standards of the UK cars I've seen recently on eblag and members of this forum, my car would appear to be nothing more than scrap value.
however, the truth is, mechanically it's very good. The front axle has had a complete rebuild with everything except the diff renewed.
it has 330k km on the clock, a few dents here and there, but it's solid mechanically (if you can ignore the lack of synchro on 3rd gear!).
you have to drive it, then make up your own mind, no easy answer to this one!