@ Divakar , Surbhi Mam is Refering to Vineet Sodhani and u r referring to Manoj batra sir book.
Vineet Sodhani GST portion is 620+ Pages and Customs around 275 pages. So, its more manageable.
Can u tell why is Manoj Batra book so lengthy 1300 pages. Almost double of Vineet Sodhani GST portion ?