I expect some of the special cars to hold prices, such as F40, 288GTO, Enzo, 360 CS, F430 Scuderia, 599 GTO, 458 Speciale, etc.
However, I just can't imagine prices for 308, 328, TR holding much longer. Those cars are way over-priced, IMO. They made so many of them and their performance is nothing special. Then again, who knows what markets in China & Russia will dictate.
Current: 2007 612 F1 HGTS
Previous: 1987 328 GTSi, 1983 512 BBi Boxer