Almost exactly one year ago I purchased my first Porsche, an 89 Carrera coupe. Here is the thread I started where I asked for some advice from the group here:
http://forums.pelicanparts.com/porsche-marketplace-discussion/722863-may-buying-my-first-911-need-advice.html
The car had 39,000 miles and was in great condition and was only two hours away. I ended up paying $32,500. Feedback from most Porsche people said that price was high. As I studied the market at the time, it seemed like a fair price - perhaps I paid a premium of a grand or two.
At any rate, the car has been great. Reliable and fun as can be. No mechanical issues, does not leak a drop of oil, etc. Put 5,000 great miles on it this year before putting it into winter storage in early November.
Looking at some recent G50 coupes advertised for sale, I see cars with 80-100k miles with asking prices from 30-35 in some cases. Makes me feel much better about paying what at the time may have been a premium. Very interested to see where prices go this spring as the economy continues to improve and more of these cars get shipped overseas.