So I know a few years back AT&T finally started offering to unlock phones that were fully paid and out of contract. I ordered a new iPhone 5c this morning, and after I pick it up later today I intend on listing my iPhone on Amazon for sale. Will I have a better chance of selling it if it's unlocked? Can I get more for it if it's unlocked? Or should I just leave it tied to AT&T as is? Thanks.