This little book really is a pretty good tool for the writing sections on the GRE. I would be interested in buying anything else he came out with.
It provides just a simple straight forward method on recognizing flaws in logic and writing essays.

I got a 5 on the Writing Section. This especially helped in Issue development. It worked as a guide mainly by showing different ways to develop a paper and ways to recognize problems in the Argument section.
I went to the GRE site and it gives examples of good essays, yes, but only EXAMPLES, not guidance, not development and rhetoric techniques (good general tips though). The examples of essays are basic enough so a person can add his own style and that's just what I did to get a 5.
There is no such thing as a stylistic method to get a 6 because the GRE essays are graded on the soundness and the logical flow of an essay.

Don't let some idiot know-it-all tell you that the test is graded on style or cleverness. It is graded on the pieces coming together as a whole. The website even says that.

This book is where I got my best teaching. Believe me, I got about 6 books total. Actually, I wish the book were about 300 pages of pure writing and then I'd take it to grad school.

I used the book and it helped me figure out ways to write patterns on the Issue section, and YES I did get a 6, YES I did contact Dr. Avants, and he even wrote back with different methods, corrected my drafts a couple of times and went way beyond the call of duty. and for $12? Hey, it was worth immensely more than that...My hat is off to you, sir. Thanks for the extra help.
A. Rego

This was really good for the basic overview plus as a guide to patterns. I have gotten Barron's,Princeton, the free downloads, and Prep Course. There is NO magical formula I have seen in any of the books on stylistics but this definitely shows how to set things up and respond accordingly. Stylistics is only hoopla and developed individually. This one is very well worth a ten dollar bill and some change !

Really simple method to learn how to answer the writing sections, easy to skip around in and serves as a fast reference for busy people.