Price has dropped once again on these drives. 500gb back in stock on August 29 if you don't mind waiting (actually just changed from August 17 as I was about to post this), available here: https://www.amazon.com.au/gp/product/B07MH2P5ZD/ref=ox_sc_ac...
And of course, don't forget cashback.
500gb deal has expired, but I've just discovered the deal on the 500gb Evo Plus (https://www.ozbargain.com.au/node/553542) which works out to be ~$123 delivered after Samsung cashback.
EDIT 2: 500gb deal is back.