Compare Vacuum Cleaner Deals
Walmart also offers the Neato XV-21 All-Floor Pet / Allergy Robotic Vacuum System, model no. 945-0041, for $339 with free shipping. (Amazon charges the same.) That's the lowest total price we could find by $61, although we saw it for $64 less during Cyber Monday week. (We also saw an open-box unit for $69 less in December.) This system works on most floors and features laser-based obstacle avoidance, a 6-foot boundary marker, one filter, and two brushes. Its filter purports to retain more than three times the amount of fine dust particles.
Note that this item is currently on backorder, but can still be ordered at this price for delivery when available.
Update: Amazon has increased in price; however, Meijer has it for $99.99 with free in-store pickup.