iRobot Roomba 870 Vacuum Cleaning Robot for $449.99 Shipped

iRobot Roomba 870 Vacuum Cleaning Robot for $449.99 shipped.  Here is a screenshot for reference.  Its iAdapt Navigation uses a full suite of sensors to navigate and adapt to a changing home.  It also features tangle-free extractors help prevent hair and debris clogs.  Most places have it for about $599.