That is cool !
I am not sure about shipping costs from other areas, but just speaking personally, it's AU$3500 LA to Melbourne and US$3500 Melbourne to LA... so works out a little cheaper, depending on the exchange rate of course, ha ha...
And like I said, the no duty thing is nice too.. I've shipped a couple Oz cars back (Including my own Charger for panel/paint) and as long as you show it's and Aussie car you are good to go. (same goes for some US cars I have brought back here from Oz..no duty for US cars coming home)
As long as they didn't invent some new laws starting the 1st of the year

(I have come across one new one already for a couple containers I am loading tomorrow actually..)