Well, I tried to find the story, but haven't managed to locate it yet.
I remember a few years ago, there was a young woman who worked at a convenience store somewhere. A guy walked in and ordered $50 worth of QP lotto tickets, so she ran them off. She said, "That'll be fifty dollars, please." The guy suddenly became abusive, telling her she was stupid, and that he only wanted $40 worth. He refused to pay for the remaining ten tickets. Her manager's (illegal) policy was to deduct the price of any unsold tickets from the paychecks of whomever was working at the time, and ten bucks was a lot of money to her (I think she had a baby to take care of, but I'm not certain). She managed to sell five or six to subsequent customers, though, so she paid for the others and tossed them onto her dashboard as she left for the night.
A few days later she heard all the hoopla around town that her store had sold the winning jackpot ticket. I remember she said that she had forgotten about the tickets in her car but, when a winner didn't emerge, it slowly began to dawn on her that some of the tickets the rude customer had ordered and then refused to buy were still sliding around on her dashboard.
Lo and behold, the winner was among the scant few tickets she was essentially forced to pay for. Naturally, she quit her job and, as an added bonus, her manager was immediately fired after she told her story at the press conference. How cool is that?
A quick-pick is a quick-pick, and if you happen to see one lying on the counter, the clerk will be happy to sell it to you, since it will help to balance his till. To me, it's worth the extra dollar or two for the remote possibility that some jerk will be kicking himself this weekend and asking, "Why, oh why didn't I just give that nice clerk the extra ten bucks?"
I've never won a major prize with such a purchase, either, but I can't bring myself to just walk out of the store and leave that ticket behind. If I did, someone else might buy it.
We can't have that now, can we?