I have had great luck with refurbished products and this one looks like a great deal.
Ecovacs DEEBOT N79 Robotic Vacuum Cleaner with 3 Cleaning Modes + App Compatible $114.95 (reg $299.99)
When it comes to house cleaning, the Ecovacs Deebot N79 Robotic Vacuum Cleaner is a sweeping success! The N79 combines state-of-the-art hardware with ultra-smart AI to leave your floor spotless. Using its detachable deep-clean helix brush roll and dual side brushes, the N79 puts your floors through a cleaning gauntlet guaranteed to leave your hardwood sparkling. There’s no need to worry about the N79 kicking up dirt while you are gone. The vacuum’s built-in air filtration system pulls particles out of the air while it cleans. Guided by anti-collision and anti-drop sensors, the Deebot N79 maneuvers through your house with ease. You won’t have to worry about it getting damaged or stuck – the N79 does all the thinking for you. It can even return to its charging dock when its battery is low. Choose from 4 specialized cleaning modes (Auto, Edge, Spot, Single Room) with the included remote or your smartphone)