Well I have to say the most I've paid (for myself) was when my friends celebrated my 18th birthday in an authentic Japanese restaurant. I had a 6 ounce (fist sized) marble grade: 8 Waygu beef, some blue fin tuna sashimi (cut and chilled raw fish sushi) and a bowl of abalone (Pronunciation: a-baloni) soup.
Waygu (kobe) Beef (140 dollars) Blue fin (10-pieces) (97 dollars) Abalone soup (43 dollars)
I don't pay for food when I eat with my family. The most I've paid for food while with friends though was.... $20? We bought a lot of junk food from Safe-Way because we were having a party.