The more I look on gunbroker and and in local shops and see the prices of these firearms approaching "new" costs the more I want to freak out and yell at the people Pricing these things. Let me ask this, do you see the price of a 15 year old Camaro even in the same ballpark as a new one? No, you don't. Jeesh. Is just like to find a really clean 5906 with its original stuff for around 400 bucks. What am I on mars and asking for a mcdonalds around every boulder?
Actually someone I know sold a Pace style camaro, white with orange stripes, orange interior and convertible. I believe it was a 1968 model but can't remember if that's with or without the wing vents. It brought $28,000 years ago, possibly 10 years ago. He said it would have brought more had the engine been original.
The seller sets a price on something and the market decides whether that price will be held and for how long. it's called capitalism.

Note - I just reread your post and saw you specified 15 years old. I don't know that a Camaro at that age would bring as much as a new one.