For those looking for an affordable spare key without the wireless remote, this one worked fine on my 2013 SE:
Not trying to steer traffic to that particular eBay seller. I'm sure others are selling keys that work just as well. But this is the only one I have experience with.
I had to go to five locksmiths until I found one that both had the cutting machine and someone who knew how to operate it. Once the key was cut, I was able to program it on the first try, using the instructions in the owner's manual.
It's worth making a spare before you need one: It takes two activated keys to program a new one, so if you wait until a key is lost or stolen, you'll need a dealer's help ($$$) to make a new key.