I purchased my first dual line sport kite today - a Premier Vision.
I'm glad I decided to buy locally from the only kite shop I've ever seen - Kites & Fun Things. Jon Trennepohl even gave me a quick demo of how to set it up, wind up the line, etc. It was a great experience. When my skills improve, I'll be back there for another purchase.
Now what we need here is some better weather.