Use of e cigarette is legal in Australia but selling e cig is Perth is banned by the law in Australia. But residents of Western Australia can source their vape products from overseas or other states, so they can use e cigarette in Perth but can not buy locally. Most importantly e liquids with nicotine is banned in all states and territories which has been forcing vapers to get nicotine e liquids from overseas as its totally legal to get e liquids from overseas. Recently, there has been discussion and efforts to legalize nicotine in Australia but such attempt failed. You can read about this effort

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