Seems like a good price. GLWS!
I have a 2006 987S that I paid $67K when new. I figure it's worth less than 1/2 now after 5.5 years. These toys do depreciate, but I've thoroughly enjoyed comsuming the +$30K in value. That's the cost of admission.
On the other hand regarding depreciation, my 993 Turbo cost me more than 1/2 the original MSRP from 1997 when I bought in 2009. Now with an additional 17,000 miles I can sell for what I paid plus an additional $10K. That's nice.