And what do you do with previous iPads Pro? Giving to the family members?A "few bucks" is subjective. Personally, I don't resell my devices so to me, the 2021 12.9 1TB 5G is a ~$2200 cash outlay (with tax). I don't consider that to be a "few bucks".
Mind, the 2021 was actually $900 more than the certified refurb/open box 2018/2019 12.9 1TB LTE (~$1300). However, considering I wish to keep it for 4-5 years, I figured I'd be much happier spending $2200 and benefiting from extra RAM, etc. now rather than $1300 now for the refurb 2018 then $1300 for the refurb 2021 or $2000+ for the latest model after 3 years.
With that said, I did notice the M1 iPad Pro having much better battery life compared to the 2018/2020 with my usage and settings (mostly reading and web browsing at 0-25% screen brightness).
I had iPad Pro 12.9 2020 and iPad Pro 12.9 2021 in the same time. I was thinking to not sell it but I had very bad feeling that I have waisted so much money.
Giving to my family members was not solution because I bought my girlfriend iPad Air few months before and I have bought to my father iPhone and he told me that I got it from work ??♂️