[renntrade]

I quick look at ebay completed listings for parts and cars will show the original poster is on to something. With exception to a few anomalies here and there, the market is dead. Very dead. and it is not just Porsches. Cars finally caught up with houses. The difference only being those selling these cars and parts haven't realized it yet, and are continuing to expect 2007 pricing.
The audience is obviously dwindling and has by in large left the building.

Core enthusiast and big buck collectors will keep the rare cars appreciating, but from the shade tree mechanic hobbyists vantage, what was worth having is had, and pretty much out of reach now....thus the total drop in demand on parts. If you don't have a car to fix up, the parts aren't really needed either.