Where can i buy an first hand iphone 3gs?

I live in gurgaon and i want to buy a first hand iphone 3gs. I want d cash on delevery option too! And any colour will work. Please tell any site or selle!

Apple have stopped making 3gs long ago. Any old stockist will have it. Try Aircel office gurgaon they have a scheme last year for selling it. If you want i can give it but it is a year old. & used for 2 months. 10 k

Ebay