I have the Boox Max, and it's expensive as shit compared to the smaller ereaders, but I use it more than enough to justify. You can't fit a textbook or coding book on a Kindle (probably the scribe you can now), but you can fit two pages comfortably with the 13.3 inch max.
Android is a huge value add, too. I can't take it for my phone, but for an ereader, it means I can use multiple library apps and scribd to borrow books to supplement my purchases from whatever platforms.
Yes that's shit.
But also on top of that 25 really means maybe 15, because they also don't require them to provide the bandwidth they advertise to you.