Surely you all know the drill where this is on sale at Chemist Warehouse which includes via eBay. Personally don't like it after I tried it at a store, so decided against buying it even though it's so cheap. Prefer to just spend a little bit more on something else, but it's all personal preference after all.
Also on Chemist Warehouse eBay — 5 Available.
https://www.ebay.com.au/itm/324799241297
Also available via Amazon as per previous deal:
https://www.ozbargain.com.au/node/821084
No stock @ 9 stores around me GC been like that all week .