Dan,
You might also want to check out the following thread that I posted:
http://www.subaru-svx.net/forum/show...ght=SVX+Prices
This thread addressed the "Old Car Pricing Guide" magazine. It was very iinteresting to me that a 1992 in #1 condition (showroom) is worth more than a 1997 #1 condition car.
But overall, the thing to keep in mind is what someone is willing to pay for a car (regardless of condition) and what someone is willing to let it go for. Buying a used car, classic or not, remains very subjective and in consideration of supply and demand.
Harry