Might be useful given Samsung Unpacked begins in 5 hours!
Just requires first name and email address, and you'll get emailed a unique code (mine took about 30min to arrive).
Probably same deal as https://www.ozbargain.com.au/node/498339. Unsure if restarted or never actually discontinued.
Discount off eligible purchases equal to or greater than $200 on the Samsung Online Store (shop.samsung.com/au) from 9.00am (AEST) on 19 November 2019 to 11.59pm (AEST) on 30 June 2020. Offer limited to 1 promotion code per customer per transaction. Customer must opt in to Samsung Australia marketing communications to be eligible to receive a promotion code. Excludes Samsung Enhanced Partnership Portals, Samsung Government Store, Samsung Business Store and Samsung Education Store. Subject to stock availability at time of purchase. Discount is not Transferable, exchangeable or redeemable for cash. Not available in conjunction with any other offer unless otherwise specified.