Amazon frequently rotates which Kindle books are on sale, so it's worth checking each day.

Here's a list of "Today's Deals" that start at $1.99. Some of these are part of Kindle Unlimited, so if you find more than a few that you are interested in, it would be worth signing up for that for $10 a month. In fact, if you haven't tried it before, you can even get a Kindle Unlimited Free Trial for up to 2 months free.

My mother-in-law was stuck in the "I only like paper books" until she got a Kindle and realized she could download so many books so easily and have a whole "pile" to take on her road trips. Even if you *think* you only like paper books, it is worth trying ebooks!