Nature Valley Granola Bars or Thins only $2.39 each at Walmart Print a coupon for $0.50 off 2 boxes Nature Valley Granola Bars and then head to Walmart to grab them for only $2.39 a box!  Here is the deal: Nature Valley Granola Bars or Nature Valley Granola Thins, $2.64 $0.50 off 2 boxes Nature...