I didn't see the end date anywhere, so I found it:
Source: http://www.cyberpowerpc.com/tl/facebook/HalloweenGiveaway/images/mainbg_1009.jpg
Good luck all!
Once you've liked them, click "Order now!" It will tell you "Coupon Code:XXX...". The enter code button then takes you to the mousepad section.
You can also make your own. ^^
I personally got a "Large Mousepad" (the $10.99 one, though is seems there's no difference between the two), so at...