Looks like the buy 2 get 1 free deals on the 4K discs started… this weekend. At Target.
Here too: https://www.jbhifi.com.au/products/star-wars-the-rise-of-skywalker-steelbook-2019-4k-ultra-hd-blu-ray
I bought TROS, R1 and TFA (and now I have to wait for them to arrive in my mailbox, in France).