Managed to pick up a S23 128GB for $634.60 this morning. Details below.
Instructions
Download trade up app on your trade-in device, when going through the checks, tell it that the screen is cracked. Depending on the device, it will say the trade-in value is $1. After going through this, you'll get the trade in voucher.
Obtain the newsletter and the loyalty voucher.
Add the phone to cart. The trade-in bonus will not appear until adding item to cart. This is also where you input the loyalty and newsletter voucher.
$50 Newsletter voucher through here(shop.samsung.com)
10% off Loyalty Code by emailing [email protected]. Alternatively call 1300 362 603, select option 9 on first screen, then option 4 on second screen, and explain to the rep that you want the loyalty discount.
The loyalty voucher is 10% off the price after trade-in discounts and before the $50 newsletter.
Ask for the 10% loyalty bonus because you're trading in, the 15% bonus will not stack.
Props to @wizco for original details.
Ozbargained. S23 sold out - special colours only
S23+ still in stock
$567 for an S23 with trade-in of an old S20. I'll take that.
Also, $51 (10%) cashrewards. Bargain.