This book is great for the $7 price, just let me preface with that remark. The book is also of a pretty good size.
On the downside, and this is a big one for me- There are more than just drawings in this book. Many of the works are drawings with Gouache and Watercolor, and are still printed in black and white. While all the works print up okay in black and white, with little loss as to the line work, the fact that the originals are in color makes me a little sad.
If you are interested at all in any more than the line quality of Schiele's works, get one of the more expensive collections of his works, which include color plates.