How much to repair a minor crack on an iPhone 5s screen?

I have a very minor crack on my iPhone, it's new and I don't have insurance for it, I don't know about the warranty, but if I did have the warranty how much would it cost to repair it at the apple store? If I don't have the warranty, how much would it cost to fix it?

IPhone 5S Cracked Screen
This kit worked great for me. I used it to replace the battery in my Iphone 4S. Seems to be well built. Just be careful. The screws are tiny and you need to be careful not to strip them with any tool you use.
http://amzn.to/...to/1e8cSNC

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