I believe the price difference came from you being part of the Lenovo business store, I didn’t use that the last time and just used the standard consumer store.
I just re-entered the specs on the consumer store for the X1 Extreme Gen 5 16" and got 5,214 Australian Dollars. Otherwise it might be if you aren’t in Australia, did you get the local dollar amount and convert to AUD or did you use the Australian store directly?
Anyway, doesn’t change the main point as you say that if you are bargain hunting, the Framework 16 isn’t the way to go but it’s still a good laptop from what we can see. I don’t mind spending more for the framework since I believe in what it stands for. Plus who knows what might come with upgrades down the line.