Hoover via eBay offers its refurbished Hoover Quest 700 Bluetooth Robotic Vacuum for $149.99 with free shipping. That's the lowest price we could find by $45 for a new one, although we saw it for $6 less in February. It features a tri-clean system, cliff sensor, 90-minute run time, and automatic recharging. It can be managed via the Hoover app for iOS or Android.