Gemini 2, the dealer I work for charges a flat fee of 2 hours to thoroughly inspect a car for a potential buyer. The inspection covers the entire vehicle. We use the same criteria as if we were inspecting the vehicle for Starmark certification. It includes a detailed written report, and includes a VMI to make certain that any applicable re-call campaigns have been done. I imagine many dealers offer this service. Why not ask your local dealer to do this for you and save yourself the trouble of handing your keys to someone you don't know? If the potential buyer passes on your car, you'll still have the report for next potential buyer. Good luck