U can use own prime video subscriptions and no need to pay extra...
No need of unlimited plan to watch contents in Binge plus...I was watching in data speed of 1-3 Mbps itself...if u need 4K then as in other platforms need of heifer speed...else is Mbps is more than enough..
For new users they will get 6 months Premium subscriptions free and 3 months free prime video... DTH subscription of NCF needs only if new connection...