How much is a iPhone 5 without a upgrade?

I have a iPhone 4 and the button in the top right randomly stopped working then the light did as well. I don't have insurance so they are charging me 300$ for a new one. I live in Vermont for the tax part if that helps. I also have Verison

Well, you just said a new one will cost you $300. That's a good deal because they normally cost $645 without an upgrade (i.e.contract free).

If your contract is up just get a new contract and a new iphone for $200. Then you can also sell (or donate on apple's site for $ back) your iphone 4 to recover some of that cost also.