Cost per serving (1 cup): 27¢
Why cabbage is so good for you: Like kale, cabbage is a cruciferous vegetable and diets rich in cruciferous vegetables are linked to lower rates of cancer. It’s also is an excellent source of vitamins C and K, and delivers fiber and detoxifying sulfur compounds. Red cabbage also boasts anthocyanins, an antioxidant thought to keep your heart healthy and brain sharp. Plus it’s very low in calories (22 per cup).