iRobot Roomba 555 Vacuum-Cleaning Robot with Scheduler & Wireless Command Center for $229.99. Shipping is $5.00 for a total of $234.99 shipped. Here is a screenshot for your reference.  This vacuum-cleaning robot adjusts from carpets to hard floors, features dirtier area detection, on-board scheduling for all floor surface, senses and avoids stairs and other drop-offs.