Well here is the official answer from CL - at long last:- "Dear Tastiger, We apologize for the problems you have been encountering. The reason you can not order threw the US site is because the shippers do not ship to Australia or New Zealand from the US. We do not have control over how the currency is used on the website . Thank you for contacting the online store's Customer Support. If you have any further questions or concerns, please "reply" to this e-mail." So looks like the US site can only ship to the US, rest of us are stuck with the international site and they can't spell either.

The supreme irony of life is that hardly anyone gets out of it alive.
Robert A. Heinlein

11th Gen Intel(R) Core(TM) i9-11900K @ 3.50GHz   3.50 GHz
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Geforce RTX 3060 12 GB
Windows 11 Pro