70 k isn't a lot of miles for a 05 car. In some ways it's actually a normal sign. It means it wasn't broke all the time. What is does mean is it's been on the road, it's had 70 k miles of opportunity to be hit with stones, sand pebbles, car door bangs, sun, salt , rain, washing scratches, curb rashes on the wheels, wear and tear on the interior (seats/carpets), brakes, on and on. But it's $12k.
A 5k mile car is no way going to look as good as a 70K mile car and the price will reflect just that.