There is a restaurant in Singapore called "Annalakshmi" which has been operating like this for, like a decade at least. You go there, eat, and pay what you feel

There is a restaurant in Singapore called "Annalakshmi" which has been operating like this for, like a decade at least. You go there, eat, and pay what you feel like paying. The food as well as ambience is good and I think on the average people overpay. I think the proceeds go to fund a non-profit organization for Indian fine arts.