A number of years ago a buddy of mine went out to buy a car that was one of those "deals" and left his wife sitting in the car after making a deal and while running to the bank to get the cash. There was a guy wanting the car standing there talking to his wife when he got back cash in hand. Another buddy hooked up the trailer, had the cash in his pocket and headed out to buy a car after telling a the seller he would take the car for the advertised price and asked him to hold it for him until he got there and met the car headed down the road on a trailer about a mile from the seller's house. Guy sluffed him off even though he had told him he was the first caller on the phone and would wait for him. He always figured that the guy who bought it upped the ante on it.