As a guide my experience approx 18 months ago was
$US2300 for a bike (which through naivety and enthusiasm I paid significant overs for)
$US900 freight (pick up in Arizona, drop off in LA and ship to Oz - I think a fair price)
The customs, import and quarantine charges totalled $1500, which IMO is a blatant grab for cash - a breakdown is as follows;
Excluding gst!!
$65.00 - Delivery order fee
$184.08 - Destination port charges
$62.30 - Destination terminal handling charges
$135.00 - Customs clearance
$150.00 - Quarantine inspection fee
$129.00 - Quarantine Entry fee
$35.00 - Quarantine attendance fee
$175.00 - Quarantine steam cleaning
$45.00 - Destination cargo automation fee
$20.00 - Destination documentation fee
$10.00 - Destination security surcharge
$282.46 - GST on the bike
$70.00 - GST compile users fee?