I just had this same discussion with a friend of mine recently! I spend about $60 a month on gas for my car (dh has a company van and they pay his gas thank goodness!) and about$300-$400 a month on food (I buy paper products and cleaning supplies at BJ's so I don't buy them every month). It is me, my dh, DS9 and DS6. We very very rarely eat out. Maybe 2x a month, if that.