As one of its daily deals, offers the factory-refurbished iRobot Roomba 560 Robotic Vacuum Cleaner for $175 plus $5 for shipping. That's $4 under our mention from last month and the lowest total price we've seen. (It's also a current low for a refurb by $60.) 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. Deal ends today.