Yo, WALL-E, is that you? Amazon has the Amazon Astro Household Robot for Home Monitoring with Alexa & 6-month Free Trial of Ring Protect Pro available for preorder by invite only for $1000 with free shipping. Click "Request an invitation" to try and get on the list for this introductory pricing.

He (she?) can move around from room to room and send alerts if an unrecognized person or certain sound is detected when you're away. Could be an interesting way to also remotely help care for aging loved ones (set the robot to deliver reminders, etc).

The Ring Always Home Cam (Drone) is also available as an invite-only preorder for $250 (no introductory pricing on this one).