I did a search and was surprised that I didn't find a post(s) about these directories. I recently looked them up on Amazon only to find they were outrageously priced (actually thought it was an error), so I found that I could buy them directly from the publisher. I also advised him in case he wasn't aware of the problem ordering them on through Amazon. Here is his response.
"Following is the explanation I received about the pricing of the directories at Amazon. Thought you might be interested.
Hello and thank you very much for promoting my books.
I am aware of what is going on at Amazon, but I cannot explain it. They have been pricing books (not just mine) like that for several years now. And they still show "new" books available even though I have not sold any new books to them in several years. I quit doing business with them and Barnes & Noble, and Camping World quite some time ago. They were making far more money from my efforts than I was, and I just decided to cut them off. I got to the point where I wasn't making it with them, so it wasn't much of a risk to try it without them, and it has been much better without them.
I know you didn't ask for such a long explanation, but it sounded like you might be interested.
Thanks again for your continued support and recommendations."
R&R Publishing Inc.
Mountain Driving Guide for Truckers, RV and Motorhome Drivers
I added the URL to his signature.