I've sold takeoffs with 75k on (4) different occasions for $275-$325 in (3) different states on Craigslist. The tires normally have a little 32nds of tread depth.
Over time I've determined that this is the "sweet spot" for selling used Michelin's.
I currently have 342k miles on my current vehicle, so I'll be selling takeoffs again in 33k miles.