Hi Nick,
I found out that the reason there were not any when you called BM, was they were SUPPOSED to get three, which is what I was told previously, but only got one.
I spoke to Rudi and he said he can do one for you (and he will have it in stock next week) for $5.5K including shipping to Sydney. ( I assumed you were in Sydney
).. But he's a good guy, so maybe give him a call if you have no joy with Allens, and he may even do a bit better..
Cheers
Dennis