mjd gets around. He buys vintage tools from a wide catchment area. His descriptions of wear and age are truthful and his prices have always been on the high side, although not outrageous. I got my Bailey Type 15 No. 5-1/2 from him and it’s a reliably excellent tool. The price was maybe a few dollars more than some others asked on eBay at the time (2019), but fair. He’s savvy enough to price to the market, so somebody is bound to buy those cutters at that price.
Maybe I was the exception. Purchased a blade for a Stanley #46 a couple of years ago. Listed as ready to go. It was pitted and needed a lot of work.
My email never received a reply.
It seems a lot of the listings are related to all the parts of the same plane.
Years ago it was clear to me the rosewood tote & knob from most Stanley planes would sell for more than a complete plane. Blades & chip breakers also entered that realm at times. I used to look for broken planes for the parts.
A few of the wrecks were just sellers with bad camera or listing skills.
Maybe if the "shut-in enthusiasts" all decide to sell at the same time prices will come back down.
jtk
"A pessimist sees the difficulty in every opportunity; an optimist sees the opportunity in every difficulty."
- Sir Winston Churchill (1874-1965)