No prices: pay what you want

The Seattle Times has a story about a cafe at which

Peretz admits that Terra Bite treads on shaky ground. He's got to attract enough paying customers to cover the cost of those who pay less or not at all.

Peretz isn't worried that people will abuse Terra Bite. There's
enough money to fund the honor system, and enough honor, too, he said.

Quite a premise from which to launch a for-profit venture. Do you agree?