Hurry, coffee lovers! Get a $5.00 coupon for Millstone coffee. Yes, you read that right–a $5.00 coupon! The offer is valid on both bagged coffee and K-Cups, but there are limited quantities, so don’t wait. To get the offer, “like” the Millstone Facebook page and fill out a brief form. The coupon will be sent via mail in six to eight weeks.