This past week, I noticed that I have two copies of "How to Preach and Teach the Old Testament for All It's Worth." In looking at my order history, I purchased one in 2016 and I must have forgotten I had the book, because I purchased the second last September 2024. One is the ebook and the other is the Logos Reader edition. The combined total for both is $11.65, so it's not that big of a deal, but why did this happen? In the past, Logos would upgrade an ebook when the Logos editions are released.