Hi There,
We have sent a few of the CD-PRO2 kits to Aus, we ship from Taiwan for Aus orders so the shipping no so bad, around $60-$70USD. We put "Electronic Parts, No resale value" on the box, I think the last fellow said he paid about $90USD in duty.
As for leaving out the Tx to save shipping, does not really help. The whole box weigh 27 lbs, and the Tx is about 3 lbs. Most of the weight is on that fancy chassis.

Please let me know if you need more info.