That seems high for the number of miles. Have you searched autotrader, ebay and the local craigslist? I actually found mine through craigslist.
One week ago I got a 06 with 7k miles, 19" wheels, xenon, heated seats, PASM, Sport Chrono, etc. It was basically brand new. price was 37.5. I also found out that I could get an aftermarket warranty that would be good for additional 6 years, 60k miles from Fidelity, which is sold by the Porsche dealership for $2,800 (because the mileage was so low), so it is four years longer than the CPO.
So, in short, if you keep looking you can likely do better. The hardest part for me was waiting till the right deal came around.