Well from what I see, "seo book" is getting about 1,394 searches with an average adwords CPC for 1st to 3rd position is costing $3.71 - $4.64. Ranking #1 on google and yahoo.
I have put up a page on my site with this info and more stats on who else is advertising for this and how much they are paying per click. View it at
http://www.keyword-seo-elite.com/seobook.php
L8R