I cancelled my iPhone 6+ 16GB ATT preorder a week ago and instead switched to a 6 that I picked up this morning. Well I just got home and find the 6+ sitting on my doorstep. I contacted Apple CS and they sent me a return label. What happens if I don't return it by October 2 instead and sell it? I don't have a CC charge so I am assuming they will charge me the full $749 for it, correct? Are there any additional things I should be aware of beyond that? I can't find anything in the return & refund terms that speak to this.