We had a cheap golf, I stayed until 9pm so they could view it, then they wanted to sleep on it, in the morning they called and had more questions, including what warranty (it had covered 150k) and what warranty on the timing belt ? Oh and still no deposit. Someone else calls 4hours away, we are coming by train and are just going to book train tickets will you hold it until we get there ? yep no problem, we pick them up from the station they buy it and drive it off.
then I had the difficult call to make and say it had sold, I guess it was partly my fault for not getting the answers quick enough but in the meantime some else said they were coming, if your interested in a car just put a deposit on it otherwise it can and will sell.