listen guys most e-books are on sharing sites like esnips.com,4shared.com,mihd.net and rapidshare...
i even had torrent links once upon a time.....
better buy after reading these books in ebook form....
the idea is simple...
just download a book... then evaluate it and if u like it then buy it....
believe me buying a book is better than an ebook unless you print....
besides low priced edition of all these bookss are available...
m&b is rs450....
resnick same 6th edition...
besides there is no difference b/w 7th aaaand 6th edition...