I bought this book in Rs- 565 from Amazon even in market, this book is available from Rs 900 to 1000(depends upon the shopkeeper that how much discount he'll give). This book is best to learn O.S. Writer's of this book explained all the concept in a very easy way with day to day life examples.
The review is mostly about the way the book is manufactured. This book is not readable at all. It has fancy fonts and is really small, moreover half of the content is stuck to the hinge and it's literally impossible to read