Bought mine for $199 from Amazon, got it installed today, it is awesome.
Combined porch light, motion detector camera, intercom, and panic button siren. Everything works great. I am really impressed with this. 
I have a sensor on my front gate so I get a bell on my watch when somebody opens the gate. The camera is set up so that it can see both the gate and the front door.
So when the bell rings, I can check the video to see who’s coming in and decide if I want to go to the door or just use the intercom. Excellent value at this price.