Although, neither of the companies have so far revealed any information about the price for iPhone 4S in India, but we can take idea from its unlocked version's price in US, which is $649 (around Rs. 32,501) for the 16GB variant.
Looking at the case of iPhone 4, it is expected from both Aircel and Airtel that they will offer reverse subsidy for iPhone 4S, by providing discounted call and data plans.
One last thing..
The new Apple smartphone , iPhone 4S comes embedded with a dual-core processor that is really powerful and excellent in performance. Also, the gizmo comprises superior graphics chip and offers an excellent 8-megapixel camera for superb quality images and videos.