I find Kindle Unlimited to be a worthwhile investment. It is inexpensive at $10.00 a month, and while the selection is a little odd, it is not that bad. One nice feature is the inclusion of Amazon published books, though the author can opt out. Apparently, successful authors are seeing a reduced income from the subscription model, while less successful authors are seeing an increase. I have an article from the New York Times which goes into detail on this subject.
Happy New Year’s!
Full article here