Be ready! You always need sandwich bags on hand for snacks and school lunches. On Saturday 5/18, you have the chance to double dip some amazing savings at Walgreens. Here’s how: They are on sale for $0.99 each this week with an in ad coupon found in the flyer. Go into your store on Saturday late afternoon or evening. Most stores activate the next week’s sales by Saturday evening so you can use the $0.99 coupon AND get next week’s sale which will be buy 1 get 2 FREE. Pick up 3 boxes for $0.99!