You're right to be wary of the reviews on amazon for magic books. Often times the reviews are from competing writers that are either against or for the book. Or other times they're from the publisher of the book praising the book, so it's not easy to tell when there's a real review on there. And of course, as always, the majority of the reviewers are people that haven't even tried the contents of the book.
Do yourself a favor, and buy it on ebay. I haven't read it, but books are just cheaper on ebay and they're too expensive on amazon especially if you find it's not your cup of tea.
If you're into chaos magic, or interested in learning about it, then check this book out, since it's most likely appropriate for that style of magic.
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