If you have a good handset (that is bluetooth enabled OR if you have datacable along with set). You don't need to buy that USB device for Rs 11000 + tax...
These days, you can easily get a good handset for this amount with all these features and many more..
You can always connect that with the cell phone service you are using and you will get the same speed (If your service provider is offering EDGE based internet).
To the best of my knowledge, currently WARID, TELENOR, MOBILINK, UFONE, ZONG are offering EDGE based GPRS Internet.