Call me old fashioned, but I still enjoy turning paper pages.
Amazon.com is a treasure trove of used books. My library is full of $2.00 - $5.00 “must read” old volumes.
I have purchased from Abe Books, as well.
Although my library is not really full of recently purchased Amazon books, I have quite a few. I learned that used books from Amazon are quite inexpensive and barely used.
I have two that were purchased at different times from different Amazon used book purveyors that have the frontisepiece signed by the author.
The only problem is Amazon knows what subjects I like and bugs me with suggestions for many many others. I continue to be Amazed at how easy it is. Click, read, click, click and it is ordered.