I had Mossy Toyota replace and reprogram one of my smart key fobs about a year and a half ago. Total cost was $273. I could have dorked around with an eBay key fob but it just didn’t seem worth it to me.
The smart key feature is never something that i would have ordered, but I have to say I really love it. Walk up to the car, the dome lights come on, you touch the handle and the door unlocks, you get in and drive away, all without ever pulling the keys out of your pocket.