I also hit somewhere in the the $100-200/week, especially if you include wine. And that is basically doing all my own cooking and no prepared meals. Meat is a large part of it, as is fresh fish, but I eat less meat the many people I know, however when I do buy meat I buy the best quality I can find. Basically I don't buy more than most people, but I tend to buy the more expensive stuff in each category. Especially my Cheese monger can see a 'sucker' from a mile away and always manages to convince me to buy something hideously expensive he's just imported from France.

I have no doubt that I could easily get under $100 a month if I had to, but I love food, love to cook, and have the money, so I see no reason not to spend that money on food.