Best Buy: $50 off $100 Purchase When You Use Mastercard

UPDATE: Check your e-mails for this coupon, as this may be a unique coupon and may not work for all! Best Buy is offering up $50 off a $100 purchase when you use your Master card! Simply print this coupon out to score this deal in-store. Many exclusions apply, so be sure to read the fine print. Valid through January 27th, 2013. (Thank You, Clip & Follow!)