This coupon has expired $0.25 for Post® MEGA STUF™ OREO O’s® Cereal. Offer available at Walmart. expires on 02/08/20 Other coupons you may be interested in $1.00 for Sangria Senorial (expiring on Monday, 01/02/2023). Offer available at multiple stores. $1.00 for Jarritos (expiring on Monday, 01/02/2023). Offer available at multiple stores.