Ocean Monger - A customer who thinks they're king and won't shut up until t

A customer who thinks they're king and won't shut up until they get the cheapest price possible.

I'm not paying full price, I'm getting 50% off or I'll complain to the manager.

You didn't give me the best deal, I'm not leaving until you do.

I'm not buying this unless you give me a free hat and a discount.