It depends on the custom duty official. Last year they charged me 100% duty on an imported hearing aid. Another time I was charged 300 rupees for a 1500 rupee purchase. Expect to pay up to 100% of the declared value.

Honestly I would just skip all that nonsense and buy from headphonezone, OP.

But if you’ve already ordered, answer is a big fat “It depends:tm:”

Actually, see my comments here and here