It's really just a code. I'm not sure if it'll work if I give it to someone else, but if you are planning on ordering something from eShakti before December 16th you are welcome to try it.
I have it because I had an awful experience with them awhile ago, and I'm definitely not going to use it, because it would cost me a fortune to save $20. Shipping to Canada from India is brutal, customs costs so much! But I know there are some fans on here, and I hear shipping to the States isn't nearly as bad. My whole problem with them was the cost of customs and their awful customer service when I tried to ship it all together to minimize that cost, the actual product is fine.
Anyways. First come, first serve!