Bags of M&M's candies are on sale for $2.50 this week at Walgreens. Buy six bags and stack two printable manufacturer coupons with a coupon from the new Walgreens February Savings Book! Find the monthly savings books at the front of the store with the weekly ads. You only need to use one Walgreens coupon, and the register will automatically deduct the $1.00 coupon for every two M&M's bags purchased. Buy an assortment of regular, peanut, almond, pretzel, peanut butter and dark chocolate M&M's.