Pay What You Like

How much is a burger worth? How about a cup of coffee? New restaurants are popping up where you decide what a meal is worth. The basic set up is that restaurant will have a "donation" box near either the counter or the door where you pay what you can afford or what you think the meal was worth. So far most of the restaurants have had success and say it is more likely that people will pay more than their meal is worth than less. I can see this working. One of the conveniences is also that some people pay for a weeks worth of coffee at a time or if they forget to go to the ATM before the restaurant, then they just pay more next time they come in.