Through 8/14, save 45% on this Dyson Ball Allergy Upright Vacuum w/ Bonus Accessories at HomeDepot.com, where it falls from $519 to $288. Better yet, this vacuum ships free. We couldn't find this exact model anywhere else for less than $373. It features a self-adjusting cleaner head and a HEPA filtration system for cleaner air. There is a five year warranty on the parts and labor. Sales tax is charged in most states.