IMO that's way too much for anything with that kinda' mileage on it. I wouldn't pay $6 grand for a Ferrari with 230K miles (if there ever were such a thing)!
¡Lo barato sale caro!
I don't think you're making the point you think you are.How about $11,000 for a car with 235K miles?
It always depends on the car. Tacoma's go for crazy prices. You are still paying 20K for a car with 100,000 miles because it will run pretty much fault free for another 400,000 miles.
The Ferrari is basically cooked at 50K miles.