The rules are not spelled out that clearly but as I read it:
Code:
Excess Baggage Charges
Charges apply to the following::
For V Australia Flights to/from the USA:
Item Flights to the US Flights from the US
Any additional piece of baggage in excess of the free
baggage allowance AUD $135 per piece USD $100 per piece
Any item of baggage that meets the free baggage
allowance but exceeds the weight and/or size limitations AUD $135 per piece USD $100 per piece
Any additional piece of baggage that also exceeds the
weight and/or size limitations AUD $270 per piece USD $200 per piece
For AUD $ 135 you could have 2 x 32kg bags (1 @ the "allowed" 32kg weight and 1 which is over the remaining 0kg weight)
If they charge you per kg it will cost an arm and a leg but per kg charges seem to only apply for non USA flights.
Cheers,