I am trying to make this a new requirement. If I read the whole book, I liked it, & I will use it in someway again...then MAYBE I will buy it. We are actually doing this with video games too. There have been several instances where my son has "liked" a game (in his head), we spent $60 & then within an hour he says, "I wish I didn't get this game. I should have gotten xxxxx". As a single mom on a super tight budget, this is not a sentence that I like to hear.
I found that the libraries available to me have a very small selection of Paleo books. I requested the three that they offer & was put on a wait list for all of them. This does not make an impatient & eager to learn person happy, but I was happy that they are desired enough to find out that 5 people were ahead of me for a particular book. Fortunately for me, the first book that I could get was one of the most popular, highly rated, and an easy read.