Australian Customs permit items that can't be manufactured in Australia to be Duty Free. Australia could manufacture blow-up dolls but the Australian Workers would not do so, due to their beliefs etc. So such items are Duty Free 😉
I believe it's time we farrangs stop referring to any of these 'girls'. I find it a bit sickening and sad. Thailand has more than this to it's credit. So many of them are there and don't wish to be there, due to reasons beyond their control. There but by the Grace of God, goes you and I!