Thought I might update this thread now that Amayama has finally gotten back me.
The 2 control arms come to $290 and the shipping is $61.
 
Amayama - $351aud shipped
North Shore Toyota - $275aud shipped
 
Might be worth emailing Keegan from NST on the email above as you might save some monies. I'll be ordering these arms shortly from NST so will update the thread once the order is complete.