Amazon Prime Free for 1 year for students with .edu

I had to buy stuffs from amazon.com. The shipping was little urgent. There were 2/3 day shipping option. However, it was kinda expensive.
For faster shipping, I could try Amazon prime as trial for a month. But then, it would just use up my prime.

Then I remembered that I had my old .edu account... just being unused.
I used my old Email address (which I still have access to). After submitting my .edu email, I was offered free prime shipping.
Now I have one year of prime shipping.
hoo!