Trying to escape the Amazon enshittification, I have started to buy ebooks directly from the authors, or from more "reasonable" ebook shops. It's way less convenient, but at least I own those epub files instead of renting them.
I still use a Kindle Oasis, but at least it takes epubs now.
@doppioslash Are they watermarked at all? I always wondered about leakage back online
@nick it depends on the author, some do watermark them, some don't, or at least I didn't notice.
Some I saw watermarked were distributed through BookFunnel, which gives you watermarking at the 100$/y tier https://bookfunnel.com/pricing/
Author Pricing Page : BookFunnel

Author Pricing Page: Author plans for everyone, no matter where you are in your author career.

BookFunnel
@doppioslash Ah that's interesting, I didn't know they offered that, thanks