Look at the condition of the car... I challenge you to find one for sale in that condition with the same KMS. It isn't my car, but to be honest I'd expect it to sell for around $3500.
Given the logic that no one pays your asking price, i don't have an issue with what he is asking for. Had he have put up 7k or so then you'd have a right to complain.
It is probably a good thing this is for sale, if you want to build a drift car buy one that is already a beater, not turn a well looked after car into one.