Meet the Appbot Link: a WiFi controlled robot with an IP camera which allows you to control it from your smart devices. Using the companion app, you can take, store, and view photos or video on your smartphone. The robot alerts you when motion is detected. You can also use the device for night surveillance.
The robot comes with an auto charging system. It is compatible with iOS and Android devices, which means you can get a live view anywhere you have an Internet connection. This robot costs under $200.