A single apple runs in the $0.30-$0.50 range where I&#x27;m at. It has 52 calories and 0.3 grams of protein. A mcdouble is $1 and it contains 390 calories and 22 grams of protein.<p>Eating fresh fruit is cheap, but it&#x27;s still not as cost effective as some fast food, let alone processed food in the grocery store.