My total grocery bills in a given week are something like $200-300 total, but that's for two people and includes non-food items.
(ex. I went shopping today, and spent $220 or so, but that included a couple baking pans)
I rarely spend more than $50 tops in any given week for take-out or fast food, and I avoid restaurants like the plague unless it's a social obligation. Some weeks I'll spend closer to $25, some I don't spend any extra at all.
So I probably average out to somewhere around $ 500 a month, give or take.
But keep in mind, where you live is almost certainly going to play a role. It's part of why cost of living can vary so much from place to place.
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