That was really enlightening Suetalks. I didn't know one banana is actually two servings!
Someone mentioned veg being expensive, perhaps you can find a local producer to help you out? Or perhaps there is an open produce market somewhere in your city/town?
If you buy fruit and veg directly from the producer it can be dirt cheap. OR you can simply buy more of the cheap stuff. What is cheaper varies depending on where you live and what farmers produce close to your home. Though in the US I bet you have awesome trading routes between the states. Even in Greece we get frozen California orange juice imported and California dried prunes
In Greece btw buying fast food and soda is way way WAAAY more expensive than fruit and veg. We can get like 3 kilos of veg for 1.5 dollars (a mix for a salad) or cheaper. Only exotic things like Ananas and lichi is expensive for obvious reasons. So I actually saved alot of money since I stopped eating quickly on the go between excersize, Uni and job.
It might have something to do with how profitable it is to produce veg instead of corn or grain in your country. Goverments should really give more money to fresh produce farmers, don't you agree?