You can cancel Kindle Unlimited by going to Account & Lists ... for the price of a single paperback from the convenience store. Even if you can afford the ongoing cost of an Unlimited subscription ...
Kindle Unlimited is the perfect way for users to reach their reading goals as it gives them access to millions of titles, and they're all free for the first two months. Kindle Unlimited ...
With a purchase of an Amazon Kindle Kids you’ll get a one-year subscription to Amazon Kids+, which provides unlimited access ... which is enough to store just about any ebook library.