General Mills cereal is on sale for $1.99 this week at Walgreens. Buy two boxes of Cocoa Puffs, Cookie Crisp and/or Trix cereal. Use one $1.00/2 cereal coupon. After shopping, snap a picture of the receipt and upload it to Checkout 51 for a $1.00 rebate. The final price will be $0.99 per box!