Dierbergs Super Secret Coupon October 8th The links in the post below may be affiliate links. Read the Full DisclosureOctober 8, 2015 by Kim Julian Today’s Dierbergs Super Secret Coupon gives you a 12 pack of Coke or Diet Coke for $1.99. The coupon is good today October 8th only. *Print the coupon or mention the number 268 at the register for the discount.