The AU$500 value estimate for trading in my iPhone 13 Mini has been accepted and will be paid into my credit card account in the next five business days. The $500 figure was the maximum applicable for the 128 GB version of that iPhone.
It had been dropped at least 30 times in the two years I owned it but was in pristine condition because I always had it in a case.
You can bet I have a neat case for the new iPhone 15 Pro, too. https://amzn.asia/d/02K6t8h