Dyson offers its factory-refurbished Dyson Ball Allergy Upright Vacuum Cleaner, model no. 208607-01, for $229. In-cart the price drops to $189.99. With free shipping, that's $206 below the lowest total price we could find for a new one elsewhere. It's designed to remove allergens and features a 30-foot cord, self-adjusting cleaner head, and whole-machine HEPA filtration. It comes with a carbon fiber soft dusting brush, reach under tool, and mattress tool. A 6-month Dyson warranty applies.

Update: The price no longer drops in-cart. It's now $189.99.