I'm not sure but Lee and Tyffany are loaded and have access to all the latest tech and probably get to use it for free just for promoting it.
It's probably using cellular which requires an extra SIM and a larger data package along with the camera cost. You're still going to have to replace batteries unless you install a solar panel backup which is an additional cost. Last time I priced it all out is was going to be about $800-$900 to get started.
You could buy several good cameras for that kind of money.