I have a friend who regularly visits bookstores on her lunch hour and surreptitiously rearranges the conservative books from the bottom to the top shelves of the display. If a current book is not on the shelves, she asks the particular "Pat" about it -- hey, we all do what we can!
I just checked the reviews of McGowan's book on Amazon, and out of 22 reader reviews, there were only 2 negatives -- and those were the obligatory liberal trashers. Of the 20 positive reviews, all gave it four or five stars. Impressive. (I just ordered it).
Regards