I have been pretty ok over the years, the odd tit but most sifted out via the phone call and told to piss off.

I tend to make sure the car is described well, priced well, spotless and with half a tank of fuel (you be be amazed at how much this swings a deal, guess it must suggest I have not been a skinflint on it, I know when I arrive to test drive a car and find it on fumes I always wonder how tight the owner has been on other things).

Best bit when you do get a muppet is stone walling them when they are being a cock and then watching as they know they would be a tit to walk away.