Walgreens: Kellogg’s Special K Cereal ONLY $1.25! April 28, 2016October 11, 2017 ELCDeals Walgreens has Special K Red Berries on a BOGO sale! Combine with a coupon for an awesome deal! Your Deal: Buy 2 boxes Kellogg’s Special K Red Berries Cereal on sale $3 BOGO Use the $0.50/1 Kellogg’s Special K Red Berries Cereal Final cost $2.50 total – $1.25 per box! See more deals on our Walgreens Deals page!