Let me be very clear here. If you are buying Exalted 3rd edition, and not spending the $3.99 on this title you are doing it wrong.
This book is a TON of value packaged into 40 pages.
The interuction alone is one of the best and clearest explainations of something that Exalted fans have wanted since the first edition.
The charms are ALL top notch and the vast majority feature very insightful commentary from the author that expand on them even more.
I don't want to spoil the final charm in the book but the ideas it gives (and the roleplaying opertunities Divinity-Conferring Touch gives as well) have the potential to have players rethink campaigns (in a good way.)
Overall I can think of MANY much worse ways a gamer can spend $3.99.
TL;DR Buy this book. You will be happy.