For any potential AP mount owners following this thread, it goes without saying, but be sure to factor in BIG coin for tax disbursements on arrival in Sydney:
Case in point, for my 8 boxes @ 116KG:
-- clearance/brokerage fees: $99
-- import gst: $1,520
-- customs entry charge: $137
-- bank fees on disbursement: $8
-- merchant surcharge on credit card usage: $35
Hope this info helps with your future AP planning