I have spoken to the guys from M7 when at AMVIV in Las Vegas a few weeks ago and we were thinking of getting the same strut tower brace.
I would contact the guys direct at
www.m7tuning.com and ask them how much to post direct to Australia as they said they have sent them before.
If you want to PM me for more details I also have their emails and phone numbers if you want to talk to Peter directly.
If we order two we might get a discount but we are in Brisbane but can pickup from Melbourne if you get it soon.