I've made a big change. A few years ago I made the decision to have my books sold exclusively on Amazon. There were some financial incentives. In return for exclusivity, Amazon entered me into their Kindle Unlimited program. However, the exclusivity side of things always irked me.
Not any longer. I've "gone wide." All of my novels are now available at Barnes and Noble, Apple, Google Play, Kobo, Smashwords, Scribd, and others.
Eternal Knight is on sale for $.99. Child of the Knight and Shadow of the Knight cost between $3.49 and $3.99 depending on the retailer.