I live in a 3-county area of 6 million, and have visited thrift stores and H for H and Goodwill in all of them. I honestly cannot recall seeing any tools worth anything/worth having, and especially at their prices. The Boca Raton FL store for Goodwill had absolutely nothing I would consider in the tool category as 'a good value for the $.' They had a set of individual Black and Decker homeowners' level power tools that looked as-if they had been dangling from some brodozer's gargantuan lifted F-250's rear bumper, next to his 'nuts.' They were beaten-up, used-up, and neglected, and the asking price was individually, more-than I'd expect the lot of them to go for, given their wretched condition from use and abuse. You know the ones, red plastic cases and not of durable construction.
I was on the board of a not for profit serving a population of physically-disabled and mentally-challenged adult males. Someone donated an old Cadillac probably close-to 20 years old, it ran after a battery swap. As I recall it belonged to an elderly relative who died, and the surviving relatives donated it for a charitable tax write-off. It was sold, "as-is, where-it-is, no warranty expressed or implied".
A month later, the buyer came-back and told us the transmission crapped-out. Someone (not me on the board) in the agency gave them back half their money. The car physically was a creampuff, not a rust-out, and I suspect that as a 'mechanic's special,' to swap-out the allegedly not-functional ******, someone mechanically-inclined could have had a cheap luxury car. I don't recall our selling price but I doubt it was very much.