Have been watching this deal: https://www.ozbargain.com.au/node/744040 ( which also credits this post: https://www.ozbargain.com.au/node/743403 )
Not only are cards now in stock at some local stores but they have an additional 10% discount using the code FESTIVE.
Details copied from previous deal:
512gb:
https://www.thegoodguys.com.au/samsung-512gb-micro-sdxc-evo-…
256gb:
https://www.thegoodguys.com.au/samsung-256gb-micro-sdxc-evo-…
Both are U3, V30, A2, UHS-I, up to 130MB/s (read), and limited 10yr warranty.
Someone mentioned Sandisk Ultras are fast enough for the Nintendo Switch. These being a class above, I figure it's a no-brainer for me to finally stop juggling my digital-only library.
Also tagging as Switch accessory for exposure, so let us know in the comments if these are not suitable for whatever reason.
Good luck with the bargain hunting these holidays, and Merry Christmas y'all!
Price beat with Officeworks too if OW is closer.