The new 8BitDo SN30 Pro+ G Classic Edition is now available through Core Electronics.
I am yet to find a reputable Australian retailer that is selling the newly released 8BitDo controller.
Unfortunately Core Electronics only has the controller available in the G classic model.
You can purchase the SN and Black Edition through Amazon US, though the controller ($77.04) + shipping ($11.83) + tax ($8.90 they include the price of shipping when calculating tax) = $97.77 but costs quite a bit more.
Edit: wrong model