General Mills Cereal for $1.49 a box at Walgreens through 05/27 Posted by Harbor Master on 22 May 2017, 3:28 pm Tweet Through 05/27, Walgreens has Select Varieties of General Mills Cereal on sale for $1.99. $1.49 a box when you buy two and use the coupon below. Click here to print $1 off any Two Boxes of any flavor General Mills Big G or Nature Valley cereal