I get asked this question 20time every day from customers at the end of the day it normally down to Budget, I have worked out some our prices below which may be of help to you, I would suggest you call 3 local companies to there prices!
Say you are moving from London to Melbourne
This is roughly what a local company to you would charge for groupage (shared container) full door to door including packing, wrapping, delivery to door unpacking etc.
100 cuft - £665
200 cuft - £1095
300 cuft - £1410
400 cuft - £1695
Hope this helps and all the best with you adventure
Kyle