During strawberry season in my part of the world, you can pick up strawberries for surprisingly low prices, especially if you go directly to the you pick em fields and pick your own.
My method of storing strawberries is washing, cleaning and freezing them. But there are other ways. Check out this article from About.com for some great tips on how to store strawberries so they will last longer.
A bargain is no bargain if you have to throw it away!