Unfortunately for the group buy but fortunately for me I have found and bought an intercooler.
My hours spent scouring the internets were not wasted

FYI: I ended up getting an IPR one, which is a copy of the Perrin one and comes from the USA also.
Heaps of guys in the US have them and seem to like them, but I have heard stories of leaks due to an ordinary o-ring that comes with the intercooler. Apparently if you get a better gasket to replace the o-ring it is fine, which I have also ordered so I'll see how it turns out.
- For the record the gasket they use is the mr gasket 738g gasket, which you can get from heaps of places but amazon will definitely ship to Australia so that's where I got mine.
There are some available on ebay from the US but I don't know what freight time and cost would be (I found one that was already in Sydney).
I haven't seen any reviews of them on here so I'll make a post in a couple of weeks when mine is on and tuned.