I agree. If you don't mind your car being out of action for the duration of the shipping to Sydney & back, get Craig to do it.
If you tee it up with him, he normally has the VB turned around same day. Easy job to remove the VB & reinstall, just a bit messy.
However, if you can't be without the car for more than a day, then I guess the extra cost can't be avoided. Unless you do the whole lot yourself....