Kindle-compatible e-books (readable on any platform with Kindle viewer app, including PC and phones) of famous major literary works are currently showing free at Amazon (permanent addition to your library, not only Kindle Unlimited)
https://www.amazon.com/s/ref=sr_p…cs+e
Three of them showed up on my Amazon homepage as "recommended" and since I mostly grab free e-books, I wondered if the price was contributing to the recommendation. It was. So I did a search to find out if there were more and found dozens.