Not sure if this has already been posted or if there is a new thread for this. It seems the mystery coupons aren't really a mystery once you redeem them. My coupon is $5 off pre-owned game of $20 or more. I'll post an attachment for the coupon once I use it.
Coupon Expires 2/19/14.
Coupon is no longer available as it was the Steal of the Week, last week
Still haven't used my coupon yet...