Amazon.com has Kellog's Special K Protein & Breakfast Bars on sale when you clip the 25% coupon and check out w/ Subscribe & Save for FS.
Items will be less if you have 15% S&S

• 5.82-oz Special K Chewy Nut Bar, Dark Chocolate and Almonds [amazon.com] $2.18
• 4.76-oz Kellogg's Special K Protein/Granola Bar, Dark Chocolate (Pack of 6) [amazon.com] $12.44
• More [amazon.com]