I wouldn't bother even trying to sell private - been there, done that. Way too many tire-kicking whiners out there to be bothered with and they all wanna see the service records of the car, for a car i might sell for 20k. I take a bit less and sell the car to the wholesaler/ dealer and go look to make the money elsewhere. My time's worth far more. I'll eat the 5-10% of margin and make it someone else's issue.
I also wouldn't buy a car for 200k from a private seller, unless I knew the seller well, and the car's history. It's for that reason that guys like Shelby and Marv get a premium when they sell the cars. People know about their rep's and trust them. I bought two cars from Shelby, sight unseen, and I wouldn't hesitate to buy anything else he has that I want, sight unseen There's a lot to be said for that, and personally I will pay the additional few points to ensure total satisfaction.
Quite recently, in Ontario, Canada, a guy put his car up for sale on kijiji.ca. The prospective buyer came to the guys's home, had him come with him for a test drive, then murdered him. He was never seen again. This is no bullshit.
Here -
http://www.cbc.ca/news/canada/hamilton/tim-bosma-s-widow-says-i-am-broken-1.1324918
The End.