We buy food at Kroger, Trader Joe's and Target. Two (and a half times two) adults, two (and a half kids) - my mother in law, sister in law and nephew stay with us three days a week. I'd say we spend $450-550 between the three, but the bulk is spent at Kroger - $300+/- a month. We might eat out three times, but usually it's pizza - $20 or less. We try to eat relatively healthy and buy a lot of fresh produce and prepare most of our meals from scratch. When we were first married, we shopped almost exclusively at Trader Joe's and spent about the same, but there were only two of us. I bet we ate out once a week, too, plus I went out with the guys every Wednesday night. I'd say all in we were over $1000 a month.