offers the factory-refurbished iRobot Roomba 560 Robotic Vacuum Cleaner in Black/Silver, model no. 560, for $179 plus $5 for shipping. That's $66 under the cost of another factory-refurb. The Roomba 560 includes a charger, two virtual walls, and brush cleaning tool. It features dirt sensors and on-board scheduling, which provides up to seven automated cleaning times per week. A 90-day iRobot warranty applies.