I have a 3 wire shelf cart I purchased for Sam's, and like it because the large wheels make it easy to push the cart across the lawn. They stopped selling them for a while, but I just saw one in the store the other day; it now cost around $60. The main problem it is not weatherproof. It is chrome plated steel, and the chrome will wear off if constantly expose to the elements. The top shelf is a basket, so if you follow the directions and put the basket shelf on top, then there is not enough clearance to open the door. You could raise the level of the cabinet by placing 2 by 3's under the feet.
When I assemble mine I didn't follow the direction. I put the basket shelf on the bottom. If you do that, you need to make sure the basket is set high enough so that it clears the wheels. Utility Cart
I also saw a cabinet on wheels that will work well if you store it indoor, but for the life of me I can't find it now. It is sold without the wheels, and the wheels were about an additional $60 option. I'm sure one should be able to purchase wheels for much less. I'll keep looking for it, and when I find it I'll let you know.