I'm a bit into hunting for old film cameras and you'd be surprized how many people barely do any checking before putting things on sale (or worse, just throw them away). I wonder how many old 'Nintendos' ended up on the landfill that way.
For instance here's three old Agfa folding cameras:
I mean, if by “putting them up for sale” they’re putting the thing on eBay as an auction, that’s not exactly mal-adaptive behaviour. The market will—hopefully!—recognize the value and set the price.
For instance here's three old Agfa folding cameras:
https://upload.wikimedia.org/wikipedia/commons/8/84/Agfa_Sup...
https://thumbs.worthpoint.com/zoom/images2/1/0311/07/agfa-au...
https://upload.wikimedia.org/wikipedia/commons/f/fe/Agfa_Iso...
One's barely worth anything, one's worth quite a bit, one's extremely rare. Would you know which is which just from looking?