After much searching, I have now found a supplier of organic (but non-certified) macadamia nuts.
Prices for activated macadamia nuts are:
large (500g) $29 medium (300g) $19 small (120g) $9
If you would like to purchase, just drop me a text (0407 871 884) so I can keep a bag aside for you and let me know when you can collect from my home in Bronte.
For more information on activated nuts, click here.
I must warn you, these maccas are wickedly moorish.