Thanks for writing us about this. The Manga Guides are books that we distribute of No Starch Press. I believe that this book is cancelled, but you can confirm by contacting No Starch directly at firstname.lastname@example.org or by calling 1.800.420.7240 (or +1.415.863.9900.) during their business hours (9 a.m.–5 p.m. PST).
Hope that helps!