DPG said:Who decides what a 2nd hand car is worth? Market demand?
A very big can of worms, but rarity/exclusivity/genre, followed by is it any good / perceived bang for buck, closely followed by target audience (can they afford it), but probably a big influencer is the general media/publications front ... lots of articles on the z4c/mc in the last 6-8 months including evo etc doesn't hurt