If you keep an eye on EBay you will see them. A guy has them for sale quite often and you will also be assured of getting the most recent version. Or what would work even better for you, contact Castellen here on The Org and he can help you out. He's from your side of the world (New Zealand) and I know the guy on EBay is from the US. I have bought from Castellen many times and have never been disapointed.
Dan
