For those who know someone in Hong Kong, or know of a business that can order and ship items from there to here, the ToysRUs website have just added several exclusives - SDCC Ghostbuster MP Optimus (about AU$270) - Galactic Man (about AU$90) - Lancer (about AU$36) - Redwing (about AU$55) - and the ultra rare Botbots Lawn League 8-packs.
Obviously this is only an option if having trouble finding them for less somewhere else.