I don't know... A little over one year ago I purchased my '88 924S, packed to the gills with options. One owner, stored for 3+ years with only 82,500 on the clock. I paid $4250.00 for it.
Since then I have replaced almost everything that's rubber... all belts, hoses, vacuum lines, rear harch seal. A lot of stuff. Even a new radiator, fan switch and thermostat. Totaling almost another 3 grand.
If it doesn't need much work, great! But with that many miles, on that old of a vehicle, be prepared to shell out some more dough.
Don't get me wrong, you'll love the car, and if you treat it right it'll like you too.
I love my car and will definately have another p-car in the near future.