The concept of "pay what you want" for goods and services is a nostalgic throwback to the days when people trusted one another just a little bit more, and it's something you expect to see at the occasional farm stand or at a hip, independent coffee shop.
Customers at these special facilities order like normal, but the cashiers simply suggest payment amounts - what customers actually put into the donation box is up to them.
Panera founder and chairman Ronald Shaich says nearly 80 percent of customers pay the full prices or more.