Angelo,

Pricing on Marks 4WD Adapters website indicates the gears are AU$1395 plus shipping. The package they shipped to my hotel room in was approximately 10x20x30cm and the weight was only 10K based on what they told me. The gears themselves are no more than ~15lbs in total. They may be able to fit them into a smaller box 10x20x20cm or so.

From that you can probably calculate international shipping from a range of shippers although as you could imagine there's also handling that could be factored into the total amount.

Off Roader
98 Montero with the Winter Package
89 Montero minty clean and reserved for overlanding trips or Cars and Coffee events
96SR (3.15:1 xcase, 35's) gone to the rust gods
96SR Build Up Thread
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Old web page