When it was just me, I spent $25-30 a week on groceries, probably closer to 35-40 when I ran out of staples or meat. With DBF, we spent 40-60 a week, but since it was split, our individual contributions were the same or less.

I don't buy a lot of snack foods--just the occasional bag of kettle chips for after rides. The rest of it is fruit and nuts, or baking supplies.