SteelSeries kicked off a new promo in honor to the PAX EAST 2012. The promo code only works in the North American SteelSeries website until April 9th.
Coupon code: PXE2012
Eldorian found this over at their Facebook, and tested the coupon code. Tip: It works on Diablo III Mousepads and the World of Warcraft products. It doesn't work on the Diablo III mouse and headset, however.