As one of its daily deals, Groupon offers the refurbished Neato All-Floor Pet / Allergy Robotic Vacuum System
with free shipping
. That's $30 under our December mention and the best price we've ever seen. (It's also a current low by $200.) 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.
Note: A 3-month Neato warranty applies.