I commend the book for pioneering a new section of the genre of erotica. I definitely found several real gems in the book that made it worth 10 times it's buying price, like "Breathing Lessons," and "Flesh Love," real works of absolute art. I've read them over and over and over, particularly "Breathing Lessons", which makes me cry every time. But I didn't find these two particularly erotic.
On the negative side, I didn't really feel like it focused on the desires of the average reader. This wouldn't have bothered me so much, except that since this is the only book that I know of that focuses on the zaftig figure, so I would have hoped for something that was perhaps a little less broad in it's ambitions. At times it even sort of felt like a compilation of obscure fetishes, like in the story "How Loretta Got a Schlong" - weird, not exotic, not quirky, not on the edge, just weird. There were several of those, like sex with a very old man, or masturbating with an idol which then becomes a fat gay man who then has sex with his male lover and then turns into a woman. It also felt as if most of them focused on butch lesbians - which had their place to be certain, but it really felt like they were the spot light. All of these would have been fine in a book several times it's length.
Overall, this is absolutely worth purchasing, but I wouldn't really plan on being aroused, it's just a really good read. You'll find maybe one or two that make you breathe heavily or move your soul, and they really are absolutely worth it. I'll be the first to buy a sequel if it comes out! Really, honest to goodness worth the money.