I think a major determining factor is what type of meals you make. We eat oatmeal or eggs for breakfast. Soup or sandwiches for lunch and things like spaghetti, tacos, stir fry, or burgers and fries for dinner. We use the $1 frozen veg bags, and mostly Great Value brands. Budget is around $550 for 3 adults and a 2 year old, including toiletries and dog stuff.