Thanks OP,
Just a few notes for those curious:
You can use your US Alienware account to get the discount.
What you get is a coupon sent to your steam inventory that you can use anytime and expires May 1st.
Not sure what the code actually gives but I just got a new logitech controller and these came bundled with them. Enjoy and Merry Christmas!
8904B7575540D087F2
C63927F6715D489C94
Just go to their facebook page, "like" them, play a few of the mini games and answer the questions at the end and fill out the form to get a free t-shirt. I believe they had 5 different shirts. Enjoy!