UPDATE (04/06): The discount code bug has been fixed and now the EPP prices are also stacking with the $50 Samsung Newsletter offer. So the effective prices are now - Samsung Galaxy S20 5G 128GB $946.83, S20+ 5G 128GB $1046.58, and, S20 Ultra 5G 128GB $1279.33. Getting close to irresistible now, Haha!!
The Samsung EPP store prices are even better now with an Extra 5% EOFY offer on top of existing 30% discount on EPP portals for Galaxy S20 models!
"Save an extra 5% on our mobiles, tablets, wearables and accessories*. Offer ends 05.07.2020 Additional discount will be applied in the cart and is off EPP discounted price." This basically takes the prices to lowest ever for the S20 5G series!
[Note: All these devices support Dual Sim (via eSim).
Also, it appears that you can't double dip this offer with $50 Samsung Newsletter Vouchers - So it's better value to use the $50 newletter if you are after the S20 4G 128GB model.]