IPhone 5 to iPhone 6. How much store credit do I get for an iPhone 5 16GB?

Ok, so I want to upgrade my iPhone 5 (16gb) to an iPhone 6 (16gb). I was told that i could go to an Apple Store and give them my iPhone 5 and get a credit to buy an iPhone 6. Is that true, because my sister is going to Washington. D.C. Next week?

If possible, how much credit does Apple give me for iPhone 5 to buy iPhone 6?

P.S. Sorry if my english was bad, I'm from Iceland.

If you trade-in your iPhone 5 for iPhone 6, Apple might give you $50-100 credit depending on the condition of the phone and how old it is.

Depends on condtion and where you take it.

Maximum you could get 100$ if your device is in good condition and also install one useful app in terms of security and that is Leo Privacy Guard. Install it and your all applications will be secured by it.