I live in Ireland. Food is expensive here relative to most benchmarks.

At my local (small & expensive) €10 will get you a kg of potatoes (€1), A head of broccoli (€2), a kg of carrots (€1) and a delicious whole cooked chicken (€6) - that's euros, but it will feed 4. Cook you own chicken or drive to a proper supermarket and you can make it dollars or get some chocolate. Spaghetti with meatballs would feed the family for half that.

Seriously though I'm surprised at this thread. Most of the world eats for under $1 per day. I assume that the median family of 4 in the US isn't spending much more than $5 per homecooked meal (X 3 X 4 X 7 = $420 per week) because they don't have the income for it.