I would try to get him down to 500. That seems about fair. But I would be ready to do some major repairs. Usually if a car is trashed inside it means the owner probably neglected regular maintenance, and probably didn't drive it very well either. If the car was clean inside I would say you have a possibility of getting it to about 300,000. Now I really would not picture it going much more then its already at. The paint being in bad condition is very normal. With that high of mileage it has probably seen some very bad weather, and I am assuming it was not garage kept. Now would I buy it that depends. I would but I would expect from the start that I would be buying a new engine and transmission. All the parts are definitely going to be available from your local junkyard acura's are a very popular car. So it really all comes down to if your willing to put major work in it sure buy it, but if you just want a smooth running no problem car don't get it.