I do not know if any are being flown by customers yet. Price wise, compare them to what a similarly equipped Droidworx or Cinestar costs. The NZ$5200 does not include any motors or electronics or postage to AZ.
My own personal experience with Photohigher and the way they have left 100's of Skyline users across the world in the dark, I would want to see someone else spend the $$$ first to see just how good the frame is, and how good the spares and backup is.
As yet there are no parts or documentation available of their website. If I was you, I'd email them with a request for spares pricing and availability as well as recommended motor and electronics setup. IF you get a reply, at least you will know where to start.
Pete
it does look good though...