The worst buyer is the one who shows up to buy the machine knowing the price is firm. Plays the games and checks it out for a while and then proceeds to "offer" $300 less than the price. WTF? That's a WASTE of my time. I'd rather waste time in emails than have that happen in person. From now on, I make it clear than the price is the price. I hate saying that to someone after we make a deal now because it seems rude, but one bad apple ruins it for everyone after him.