Walgreens – $1 Kelloggs Cereal This post may contain affiliate links. Please see the full disclosure policy here. Posted on May 1, 2010 Written by Mary Leave a Comment Make sure you print the $1/2 Coupon HERE (I used zip 63366- then clicked on the food category to find it fast). This coupon will make cereal just $1 after RR’s this week at Walgreens! Remember to print TWO PER COMPUTER!!