I never understood why they don't just strap them on a ship and send them out as project cargo. Or take the wings off and containerize. That's done all the time for Yachts which are perfectly able to be sailed to destination. Only real difference is how long it takes but a modern container liner is suprisingly fast.
For example, to ship a new Cirrus SR20 to Australia starts at $28,995 and you'll need to wait for factory reassembly and certification. To ferry the same aircraft costs $22,800.