Thanks to lammy's deal here: https://www.ozbargain.com.au/node/920565
Promo is buy 2 get 15% off and buy 3 get 25% off - but I purchased 3 items and scored 40% - more than likely an error.
Some worthy mentions:
Logitech G PRO X 2: RRP: $449.95, sale: $299, now: $179.4
Logitech G PRO X Superlight 2 Lightspeed Wireless Gaming Mouse: RRP: $175, now: $105
Enjoy
oh my gosh… yes indeed.