Through 12/02, The Dollar General has Select Kellogg’s and General Mills Cereal on sale three for $6. You must purchase three to get the discount. Deal Idea: Buy 4 Boxes of Included Kellogg’s Cereal and two General Mills for $12. Use the $2 off four Kellogg’s coupon below and the $1 off two General Mills coupon below. Pay $9 for 6 boxes or $1.50 a box.