It's not just the buyers. I've pretty well given up on buying tools on marketplace or Craigslist and am now just sticking to auctions and estate sales.

I recently tried to buy a joiner, asked the guy if it was still available and what a good time it was to swing by. I didn't haggle, just told him I'd head over and pick it up. When I got there he told me someone had already purchased it and then he tried to sell me a sander.

It's always people trying to screw people over, or people thinking they're going to get 90% of the retail value for used equipment.