So... My question here (mainly for the AU folks) - do you know of any reputable places to buy these at the moment that aren't stupidly priced???

Here's where I keep checking: https://rpilocator.com

I haven't checked for your area, but it works in the US.

Resurrecting a slightly-older post, but this is making me think about my experience with building a PC (I've ordered parts, and am now waiting on the last ones to arrive, at which point I will hopefully put things together and not need to buy additional parts due to some functional lack or some bit of incompetence on my part).

And one of the places I used a lot was idealo. So, idealo.de, and Searching for, e.g., Raspberry Pi 4 Model B seems to work fairly well for finding
places and prices.

As a bonus, PC-building thing, pcpartpicker.com was a delight to use (de.pcpartpicker.com for me), as there was lots of advice, other builds, and ability to save what I was thinking for each section of the build.

(hopefully no one else already suggested these things. If so, sorry for being repetitive.)

--- Mystic BBS v1.12 A46 2020/08/26 (Linux/64)
* Origin: Storm BBS (21:2/108)