I have attended various events on SEO but they have all been from companies selling their wares about how you must come to them for a website that is at the top of Google. I thought this was worth the money - written in language that I could understand. If it is a compilation of other books as the other comment said well I didnt mind.
I've read numerous SEP books and although there are some good points listed in this book I feel a lot are just listed and rehashed. that said, it was a good read and I did pick up a couple of good bits so it was worth it