From their post:
BrigadeGames.com January Promo - 10% Off Orders $30 or more* Ends 1/16/2012 10% Off*
Coupon code: JNGMG with coupon code on checkout. *Coupon must be used and applied to order (enter in coupon box on check ot and hit "go" to apply it to your order. Not valid on sale, discounted/promotional items, or quantity/volume purchase items. Not valid on existing or previously placed orders. If ordering by money order, use the webstore to checkout and enter the coupon code, choosing money or as payment method and print out the order and mail it with your payment. Offer Ends 1/16/2012, midnight EST.