That is only the second car I've seen for sale over 100,000 miles. What are these cars worth with that mileage?

I know at 40,000 miles I see some at $13K... by 80K they are down to around $10K...?
There is one near me, Graphite Gray, 99,000 miles with new tires and brakes in front (rotors, too) for $9995.
I am about ready to offer him $9000 and see what happens.