Just as a comparison... Mean Deviation, the unquestionable, absolute bible of progressive metal goes for about $20...
You can't compare Mean Deviation to my book, sorry, as far as physical material. My book is larger, hardcover, with full color photographs and thicker paper, not a paperback like Mean Deviation. It's pretty much a coffee table book which always sells at a higher price unless you pick it up off of the clearance rack at Barnes & Nobles. Mean Deviation also was published through a publishing company so they were printing at higher volumes. This is self-published, through a print-on-demand site - hence the higher cost. I realize it is pricey. Maybe a bigger publisher will pick it up someday. You can buy the e-book for $6.99. Doesn't mean it's not a good product. There are lots of great self-published books out there. Just like there are lots of great bands who self-release their albums without a label.
And the Ann Boleyn thing was a very minor snafu that happened during the editing process (two sentences got jumbled together, probably when my editor & I were going back and forth using track changes...it was not intentional and it was accidentally missed in the final proof). Ann made it out to be a bigger deal than it was. I was gracious about it and apologized for the mistake. The error has been fixed for any books that go out from now on.