Good point. The various high end auctions like BJ, drive the prices artificially high, already, while most of us aren't in that high end of the hobby, the "garbage is gold" mentality is created by that sector.
I can't tell you how many decent cars and trucks and parts I've walked away from because the seller was so far off base with his pricing, that it was too high to even negotiate a fair price.
Just 2 weeks ago I was looking at a set of NOS valve covers for a small block. The guy wanted $400.00 for the pair. I really wanted them and offered $200.00. His reply, "The price is $400.00, take it or leave it". I left it.
The might be worth $200.00 each to someone, but I'm not that guy. I can bead blast and paint any of a dozen small block valve covers that I already own and they will look as good, and serve the same purpose.
