Meh.com offers the factory-refurbished Neato All-Floor Pet / Allergy Robotic Vacuum System in White/Purple, model no. XV-21, for $140 plus $5 for shipping. That's $5 under our July mention of a refurb and the lowest total price we've seen for this model. (It's a current low for a refurb by $70.) It works on most floors and features laser-based obstacle avoidance, a 6-foot boundary marker, two brushes, and a filter. A 90-day Neato warranty applies.

Of note, at checkout you can opt to purchase a monthly $5 VMP Membership, which bags free shipping on your current order and orders made within the next 30 days. Since it costs as much as the $5 shipping fee, you may want to consider this option if there's any chance you'll buy something else from Meh.com. However, it's an automatically-recurring charge, so if you're not going place another order at Meh.com, you'll want to cancel it before your 30-day period is up.

Also note that Meh.com contains harsh language (unsuitable for work, children, people with delicate sensibilities or good taste) on its product pages.