its split in two different categories too me. Category A. is do i care if its new: ie guns im going to shoot most anything modern, ar's aks any modern handgun. Couldnt give a **** if these were new so im not paying new prices, simple as that. Category B are older collectable firearms where new condition may acutally greatly effect the value. So i wouldnt give two ****s if a glock is New in box, but im giong to be freaking out over a never fired wwii colt
The problem here is sellers confusing "old" or "vintage" with "collectors item". Your Model 19 may be old, but it's not a "collector's item."
Also there's a reason some things are "rare" -they were POS when they were new, and they are still POS. Sort of like selling a vintage Yugo.