US$369=AUS$485 @.76 exchange rate
import duty=$60.62 (17.5% approx. You will have to pay for this)
customs clearance fee=$35 approx
freight=$80(estimate)Freight from the east coast is way more expensive than from the west coast of USA. Its all calculated on distance from start to end destination.
total cost to you (AUS)=$660.62
This is an approximate but most probably more of a pain in the ass than worth while. Try negotiating a better cash price with a retailer here usually you can get at least 10% discount for cash.
Importing can be a real pain. It's worth the hassle on buying bulk You can get lucky and get thru customs without paying but highly unlikely. You will only really save a few bucks.
I import products from all round the world and i have a customs broker to take care of all the clearance and freight forwarding. They have been in the game for ages and clear stuff really quickly.
All the best hope this helps. cheers UBER