I don't owe one, but based on features, it looks like an overpriced wifi camera.
1. You can get pretty good wifi cameras for under $80 with free shipping on banggood.com or ebay.
2. Looks like it was designed to stick to the tank glass, which to me is a deal breaker. Wifi cameras can be placed where they are not visible when you are watching the tank.
3. If was going to stick a camera with a cable, to the tank, I would rather use a $10 USB camera with a computer like the RPI. However, the setup is far from being simple and user friendly.