I'd like to begin by noting that this isn't a bad book for the price. It contains some interesting and worthwhile information, and parts of it were fun/interesting to read. I particularly liked the chapter that dealt with reproduction weapons and other fake items (though it would have been nice if it included a few example photos). There were also solid chapters dealing with the history of Star Wars collectables, as well as vintage and new figures, trading cards, comics, etc..
My two main concerns about this book were the quality of the rating system and the price guide (both seemed somewhat misleading). For example, on page 25 he shows a picture of a vintage R2-D2 figure that is in TERRIBLE condition, but gives it a C6 rating. However, I think most collectors would give it a much lower rating (and many would probably just throw it away it's in such bad shape!). Further, if anything, the price estimates provided in this book seem too low! For example, the price guide says a mint/complete loose blue Snaggletooth sells for $55 (but, I've never seen one go for that little anywhere). So, if the author is selling his mint/complete blue Snaggletooth at that price, I'll take it!
Other minor concerns include a price guide that is more confusing than most, and calling the book an "official" price guide when there doesn't seem to be any formal connection at all (I didn't see it stated anywhere, but it seems this is just a name the publisher uses for all their collectable books).
In sum, most of the information provided in this book is not new and is also available elsewhere (by far the best option being John Kellerman's Star Wars Vintage Action Figures: A Guide for Collectors). Though you'll probably pay more for many of these other books, most will contain a lot more photos, be in full color, and be printed on high quality semi-gloss paper. By contrast, this book contains only a modest number of photos, is 98% black and white, and is printed on newsprint. For all of these reasons, I give this book 3.5 stars (rounded up to 4 stars because even an average book on Star Wars collectables is still pretty good).