Hi.... looking at purchasing a clean Prius C three, color red, 78,000 miles, with sunroof. KBB and Edmunds show a price of about $8500 for a private sale. Does this sound reasonable? (seller wants substantially more...) Also, if I have it checked out by a mechanic, is there anything specific that they should be looking for. I'm replacing a 2003 Prius sedan...a wonderful car. with 178,000 miles.