If you go to the slingshot website in the US it links to all the official online retailers. Prices seem fixed they were all about the same, diff deals on postage. Beware some prices don't include bar & lines!
It's been a few months though, I think SS were looking at getting a supply in to Oz around Aug/Sept so you may have one to demo in the next month or so. Talk to your local SS dealer - best to buy from someone here in terms of product support.
As for the 2013 turbine - it gets going in next to nothing. Relaunches easily if you crash it. I use my normal TT down to nearly 10 knots (Dundee). I was going to buy a bigger board but honestly dont think i even need to. Haven't tested the top end yet. It has batten pockets on the wingtips but didn't ship with them. It seems to fly fine without them, although the tips flap a bit.
It's my yellow arrow kite