This is an unlocked GSM data card. It works on all GSM networks. All you have to do is insert the SIM, define the access point in the software and you are good to go. The main advantage is tha you are not locked to any network. If you buy a data card from Reliance or Tata or any GSM company, the card is locked to that network. The result is that you are pretty much stuck with the phone company. With this card however you are free to change carriers as you wish. As of now in Delhi, Aircel offers unlimited internet at 100 rs postpaid. MTNL offers unlimited plans at 350 per month in Mumbai and Delhi. Similarly BSNL offers unlimited GSM data plans at 350 Rs AFAIK I have attached the image. I am open to selling anywhere in India. If you are in Delhi NCR, we can meet and work out. If you are out of Delhi NCR, you would have to make the shipping arrangements coz I frankly have no idea. The modem is barely 7 months old. Expected price is 3500 Rs.