10.Sweet Potatoes
Sweet potatoes are a rich source of fiber, vitamin A, and potassium. They are also high in antioxidants that protect your body from free radicals. According to Margaret Wertheim a Registered Dietitian in Chicago, “Sweet potatoes are a great source of complex carbohydrates, fiber, and beta-carotene, all for a very low cost.” Prices can range anywhere from $0.50 to $1 per pound.