Welcome to the forums, @dineshdn1112.
That really isn’t a question that anybody here can answer, because there are too many factors to take into account. Rs. 8000 might be a reasonable price where you are, but $121 would most certainly not get you a 15-page site in the US or Europe. You’d be lucky to get one page for that, I would think.
Price will also vary according to your content and the complexity of the design; whether or not all the pages use the same basic layout and other factors.
Your best course of action would be to request quotations from two or three other firms in your location, and see what they say.