I spotted a high value Special K Protein coupon that you can use to pick up a great deal on the bars or shakes at Publix. This is a super high value coupon but I fear that it's regional so it may not be available for everyone. If you have it, you can pick up the bars or shakes at a very nice discount.
Special K Protein Meal Bars or Shakes, $6.99
-$5/2 Kellogg's® Special K® Protein Meal Bars and/or Protein Shakes
Just $4.49 each after coupon.