To treat the book as a holy scripture without critique would be a disservice to aspirants. While Laxmikanth is the king of "Structure," it occasionally lacks "Depth" in niche areas.
Typically INR 400-600 (approx $6-8 USD). Compare this to the cost of an UPSC attempt (fees, coaching, time). It is a worthwhile investment. public administration by laxmikant pdf work