Depending on where you live, Cheap and Nutritious foods includes eggs, milk, canned fish, canned tomatoes, canned beans, rice, oatmeal and pasta seasonal fruits and vegetables. Stay away from packaged goods as these are the ones with high margins. Frozen section have ground beef and turkey in a rolled up package that can be made pasta sauce, humburger patties and meatballs. Eat whole foods, They are healthy and cheaper than processed foods.