The Nest was developed by former Apple guys. It is the same kind of Apple vs Android debate - Apple charges more for the cool factor.There are other programmable thermostats that offer more functionality than it and charge less, but such is life.
That's one of the main reasons I never enter these things. I don't have a good way to go about taking good photos most of the time. These days when I'm wearing something that I could enter, I am traveling.