Tip For Non US/Canada Users :
First enter the promo code on the check out page. After it says that it wont accept the code, ...etc. Don't delete the domain from the cart. Go back to the home page and click on "Cart", under "Currency" change the currency to United States Dollar $ and the price will change to 1.17$.
Remember, if you are making transactions in your local currency apart from US / Canada Dollar, then this promo might not work.
You can actually try this method for other "US/Canada only" codes as well.
Hope this helps.