I have order the same wheel, had a problem with them at first but they explained the problem and fixed it and also gave me a discount and apologized. I would gladly do business with them again.
They shipped the wheel to me in like 7 days if I remember right.
The wheel I got was part # 500-222
bicycles, tricycles, industrial bicycles, industrial tricycles, bicycle parts, tricycle parts
I am liking the wheel very much with no problems, got several hundred miles on it so far.