FYI: $100 per week for two would put you just above the average spent in the U.S., according to this post on the Accidental Hedonist (although that includes eating out, which you may not be including).

The $100 budget doesn’t include eating out, which we do very seldom (mostly because we’re already spending so much on groceries). And let it be noted that we have yet to actually hit the $100-a-week mark. Yikes!

This one’s tough! We are averaging about $530/month for groceries for our family of four. That’s with buying our meat farm-direct, in bulk (and limiting consumption to 5-8 pounds per week), buying most of our groceries in bulk (from Azure), and eating mostly organic, whole foods. I do a lot of food prep at home--bake bread/bagels, make yogurt, cream cheese, etc., which saves me 50% and more over buying from the store (and taste so much better). An interesting site with the USDA’s Cost of Food at Home.

that is tough. I spend at least $200 on milk & cream alone each month. I think I could do closer to $600 a month (for five of us who eat out very rarely) if I had complete control over the grocery budget: the husband blows it by splurging on pepperoni sticks, vitamin waters and the like. did someone say oy? OY.

You’ve got company, sort of. http://www.gourmet.com/food/2009/02/extreme-frugality-introduction