Are you referring to any overseas conversion to an Australian CPL(H)? Does that include CPL(H) conversions from NZ to Australia under the TTRMA?
Now there is an option guys might need to consider. Going to NZ to get CPL and then using the TTMRA system to convert to a CASA license. I'm not up to date with heli costings but compare cost of living between both countries and see what comes up. You'll get some good mountain flying in the South Island also.
Best to do CASA conversion whilst in Australia though, so a well earned stop over on the way home may be an option.