900-1000 USD roughly...
Do you think you need a k version processor? I'm assuming that because your asking this question in the first place, you wont be overclocking. Also, for a gaming machine, the i5 2500 is plenty enough horse power. I agree with the above poster, save the 100$ (5500 rupees) and go with the i5 over the i7.
What games are you planning on playing?