If you're a fan of Tony Taka, this book is without a doubt worth adding to your collection. But what about the folks out there who have absolutely no idea who Tony Taka is? The games on display here are limited to Shining Tears (primarily for the full page images) and Shining Wind. Shining Wind was never released here, so the only real attachment someone could have to the characters would be through Shining Tears, which had a largely negative reception on the PS2 because of loading times and repetition.
Ultimately, regardless of your familiarity with the artist or the games, Tony Taka is an artist known for having a rather unique style among his contemporaries in Japan. A quick Google search for Tony Taka will quickly reveal whether this style may appeal to you or not and should be the deciding factor as to whether this would be something you would be interested in purchasing. I did not find the brief interviews to be all that informative, but the drawings (the point of the book) were quite pleasing. As an added bonus, the cover is indicative of how risque the works get - this is something that would not have to be hidden in case a person unfamiliar with the content swings by. As mentioned in other reviews, the book quality is pretty good for being softcover. I would have preferred hardcover just for the additional longevity because I can see revisiting this rather frequently, but this is about as sturdy as I can imagine an over-sized softcover book being.
I would say Tony's Artworks from Shining World is well worth buying under any circumstance, but then Tony Taka has my second favorite art style. Udon has done a serviceable job in bringing this book out here.