Very convenient of BBTS to take preorders.
Maybe it’s this? From shopmates terms : “Items valued over $2,500 USD will be subject to an additional customs clearance procedure in the USA” you need a Shipper’s Export Declaration Form (SED) to complete.
Or, you’re right and it does mean import duties in Aus. I know from experience DHL will actually handle all the paperwork and just invoice you the cost.
Might be best to email their customer service for a clear answer.![]()