If you create a Amazon account using your mobile no or email, you can access Amazon Prime for free for a month. You can get one more month with a fresh email. All Yashraj films and many other bollywood/regional films are available for free, which otherwise may cost you 100s of rupees on Google Play or iTunes.
Popular Hollywood films including Batman v Superman, The Godfather, Mission Impossible 5, Transformers, Terminator Genisys, Memento etc. are also available for free.
TV series like Mad Men, Dexter, Grand Tour, Mozart in the Jungle etc. are also available for free.
Not all films are available (Marvel films for eg.), but some are better than none. Almost every major film is free on Amazon Prime in the US, hope they make them free in India as well.