On Amazon where you can now get this
Renewed iRobot Roomba 860 Robotic Vacuum for just $264.99 shipped (regularly $449.99)!

The robotic vacuum cleans underneath furniture and can sweep/vacuum hard floors and carpet. It features anti-drop sensors, anti-collision sensors, and automatic recharging. You can schedule this robotic vacuum to clean anytime! It can sweep and vacuum while you are at work or sleeping. It features app controls and/or you can connect it to Alexa or Google Assistant to use voice commands.