Bananas
Cost: $0.39 each
You can't beat a healthy snack that costs less than 50 cents! A medium banana has about 100 calories, 3 grams of fiber as well as potassium and vitamin B6. Best of all, bananas are easy to transport (and come in their own sterile package). Add sliced pieces to cereal, oatmeal or a peanut butter sandwich for a more substantial meal. Apples and oranges — our other favorite, classic fruits — carry a similar price tag when they’re in season.