I once bought a myford lathe on TM that was owned by the seller's father.
It had been looked after really well and the guy threw in a chest of engineer's tools and dozens of tobacco tins of tools and fixtures.
He looked like a kid at christmas when I flicked him a couple of extra notes.
This sort of thing happens with woodworking tools too. I recently picked up a Dewalt Router from an elderly gentleman on ebay. He was really pleased it was going to a good home, dug out extra bits he hadn't listed, and sent the instruction manual as well when he found them. I put a bit of extra money his way. I've a feeling us enthusiasts really want the stuff we care about to carry on being used, so it's more about finding the right home for things, rather than maximising profit. I know, out of touch with the modern world...