Bestbuy offers Dyson - Ball Allergy Plus Upright Vacuum - Moulded Blue/Iron for $499.99 (orig. $599.99) with free shipping.

Product Description:
The Dyson Ball Allergy+ has the strongest suction of any vacuum.¹ It handles tough tasks easily, making it ideal for parents and pet-owners. It has an advanced self-adjusting cleaner head that automatically adjusts between carpets and hard floors – sealing in suction across all floors. Its wand and hose release in one smooth action to make it easier to clean up high and under furniture. Comes with six Dyson-engineered accessories, including the tangle-free turbine tool, which removes hair from carpets and upholstery without tangling. With hygienic bin emptying, there’s no need to get your hands dirty – just push the button to release the dirt. Whole-machine filtration ensures that allergens and bacteria are trapped inside the machine, not expelled back into the home.

• The Dyson Ball Allergy+ has the strongest suction of any vacuum¹
  ¹Suction tested to ASTM F558 at the cleaner head, dust-loaded against upright market.
• Ball technology helps you navigate around obstacles with a simple turn of the wrist
  For easy, precise maneuvering around your home.
• The self-adjusting cleaner head has an active base plate that automatically raises and lowers to seal in suction across all floors
  Combined with a powerful motorized brush bar, it deep cleans throughout the home.
• Engineered for larger homes with pets
  6 Dyson-engineered accessories include the tangle free turbine tool, combination tool, articulating hard floor tool, stair tool, carbon fiber soft dusting brush and mattress tool.
• Advanced, whole-machine filtration
  Ensures that allergens are trapped inside the machine, not expelled back into the home.
• Pioneering Radial Root Cyclone technology
  Increases suction and helps remove dirt and allergens from your home.
• 5-year warranty
  Lifetime Dyson customer support.