Other arguments notwithstanding, look at the guy's other auctions:
- an ordinary 60's-era panel-mount variable resistor for $49 !!? (it has a
(wow) solid brass shaft!)
- a bunch of old-style connector pins which he claims to be "solid gold". He
cut one in half to see, but doesn't show a photo of said cut. When cutting
such stuff the gold plate can smear into the cut. They're old (I've seen them
in early 60's equip.), so it can be expected to be a good thick plating, but
solid: hardly.
With that said, I have a shoe-box-sized pile of concentrated gold-plate stuff
(snipped PCB edges, connectors, pins, ICs, etc.) from scrapped equipment that
I have to find a way to turn into money someday.
There used to be an electronics war-surplus shop in town (survived from the
50s or early 60s till the mid-90s); prominent on a corner of the proprietor's
desk was a deep tray filled with a bath (a strong acid?) which he'd throw PCB
snippings, etc. into to do his own gold recovery.