Bestbuy offers WORX - Aerocart 8-In-1 Yard Cart - Black for $159.99 (orig. $229.99) with free shipping.

Product Description:
The Aerocart specializes in making enormous jobs manageable. Hold up to 300 lbs and move it from one place to the next with much less effort than a normal wheelbarrow would require. It’s an 8-function yard cart, with available accessories to add even more functionality. If you would generally need a second person to help you do landscaping projects, like moving rocks or large potted plants, the Aerocart has come to your rescue. Its innovative design lets you zip around the yard like a gardening superhero. 

• 200 Lbs = 17
  The Turbo Lift design provides leverage to transport tremendous loads, making 200 lbs feel like approximately 17 lbs.
• 8 Different Carts In 1
  It quickly transforms from a lightweight wheelbarrow into a yard cart, bag holder, dolly, extended dolly, cylinder carrier, rock/plant mover & trailer tote
• Flat-Free Tires
  Always get a smooth ride with these rugged tires that will never need inflating
• Clever Design
  The innovative two-wheel placement makes all eight functions possible by shifting the fulcrum, and thus the center of gravity, to the optimum place for each job
• Do It Yourself. Do It Better. Do It With Worx.
  WORX tools are engineered with cutting-edge technology, and above modern efficiency standards, so you can build a cost-effective tool collection that’s been designed to last
• Includes
  Aerocart, Cylinder Holder, Bag Holder, Plant Mover Strap, Rock Mover Mesh