As one of its daily deals, 1Sale offers the refurbished Neato All-Floor Pet / Allergy Robotic Vacuum System, model no. XV-21, for $199.99 with free shipping. That's $49 under our mention from four days ago of a new model and the lowest total price we've seen for this vacuum. (It's also a current price low for a refurb by $40; by $69 for new.) This system works on most floors and features laser-based obstacle avoidance, a 6-foot boundary marker, two brushes, and a filter that purportedly retains more than three times the amount of fine dust particles. Deal ends today.
Of note, a 90-day warranty is applied, but it's unclear who backs it.