Re: customs duties, it depends which method of shipping is used.
* If its EMS (or another form of international "courier" [basically anything faster than surface mail/sea]), then anything above A$250 attracts customs duties.
* If its shipped by sea, anything above $1000 attracts customs duties.
A notice a number of the prices nengun lists are "to your door" which means all those costs are already built in. If in doubt, ask.
LW.