Arun Sharma – Highly Recommended
Sarvesh Verma – Quantum CAT
This book is better if you have weak foundation in mathematics and looking for broad topic details.
We have researched the rates of these books thoroughly and you are getting these by one of the cheapest option available online. Flipkart provides 30 day money back guarantee and even if you do not have credit or debit card, you can pay the by cash only when the book is delivered at your doorstep.