iRobot Roomba Bagless Robotic Vacuum Cleaner (White) for $239.99 shipped. Here is a screenshot, along with a video clip for reference. It covers up to 3 rooms on a single battery charge, and comes with a self-charging home base and 2 virtual walls. Based on our own experience, this robotic vacuum is great for sweeping the floor and picking up debris, but gets into trouble with hair and does not have the same kind of sucking power as an ordinary vacuum. However, it still makes itself very useful as a self-motivated cleaning agent at the Uberi office. Most places have this iRobot vacuum cleaner for $270 or more.