Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Simple, obvious, and overpriced

This book is, without a doubt, the worst "business" book I've read. I put business in quotes because it barely even qualifies as a business book. It sells itself as an alagory for managing change but the concepts are so basic and simple that few readers will learn from it.In addition to being simple and obvious, it's outrageously expensive. It would have been overpriced at $5 yet I found out I paid $17 on my Kindle.The best thing about this book is that it only takes about an hour to read so, while a waste of time, it's not a waste of a lot of time.