Yes, I see there are add-ons as I wrote in my previous post. What I'm saying is they are just add-ons for a base package. I suspect arunkris was asking if he can subscribe just for the HD channels without any other SD channels or base package. I don't think that's possible, is it?
Yep. Even SCV cable which I'm using now. One needs to buy a base pack even to get all FTA channels in digital format and to subscribe add-ons / top-ups.
It's like how in a chettinad restaurant, you can order "extra rice" only if you first order a biryani.