I was very interested in seeing what made your cameras and plans cheaper... but was disappointed. VIAAS seems to charge $479/year for 30 days of 1080p video and $399 for the camera. I don't use Nest's new camera but I have two of their indoor cameras elsewhere, for which I pay $150/year for the first camera and $100/year for the second (I think) for 30 days video. They also have a $50/year plan for 7 days of video. It also sends me e-mail and APNS alerts when it senses motion or people. So, I don't really see how your parenthetical assertion is true - despite really wishing it were true.
I have evaluated and intend to use a UniFi camera system at my home when I can get around to running the PoE wires.