Got to www.JimClarkStereo.com Jim Clark Stereo , here in Rockford, IL, USA.
Jim is a member here, and a super great guy. He's a personal friend of Bob Carver's, and a dealer for the current line of Carver Tube Amps.
I know he ships all over the world, successfully.
Contact him through the contact-page on that website..., ask about what it takes to ship a 275 to Australia...
He's a straight shooter, and will give you facts.
Then, you will precisely know what you have to save up for..., and it won't feel like the lottery ! 😉