Just an FYI:
First of all, I couldn't imagine not having AppleCare+. Second of all, if you have AppleCare on your 5S, you can call Apple (when purchasing AC+ / if you already purchased it) and ask for the remainder of your 5S plan to be prorated. They'll return the $50 or so to your card. Of course, your 5S will no longer be covered, so this only works well if you're selling it or something of that nature.
First of all, I couldn't imagine not having AppleCare+. Second of all, if you have AppleCare on your 5S, you can call Apple (when purchasing AC+ / if you already purchased it) and ask for the remainder of your 5S plan to be prorated. They'll return the $50 or so to your card. Of course, your 5S will no longer be covered, so this only works well if you're selling it or something of that nature.