I would also consider the
Pocketbook Inkpad Lite model or reMarkable 2, which meets your requirements and costs approximately ~ $240
(from Amazon) & $279 for rEmarkable 2
https://www.pocketbook-int.com/us/pr...ok-inkpad-lite
https://remarkable.com/store/remarkable-2
A minor negative point is perhaps only the lower resolution (Inkpad Lite).
Otherwise, I think it is a very correct device for the price.
PS: It also depends on whether you need to use a pen.