bx-zone.com says :-
IIT JEE is one of the toughest exams in the country.There is a saying that even some of the greatest scholars of the foreign countries can’t crack iit jee. Cracking iit jee mains exam requires immense dedication, eing locked in a room for 2-3 years and studying and only studying. However, the books from which you study also makes enormous difference and the good news is that you can save a lot on jee mains books, iit jee question papers of previous years and some jee packages of reputed institutes y buying them from bx-zone’s online second hand bookstore. The used booksellers (students who have already written JEE) are offering some great discounts on iit jee packages like this one Fiitjee packages for jee with the discount being 98%