Just had the Costco email and wanted to compare price on these Nature Valley Granola bars spotted these are on offer at Waitrose.
Morrisons, Sainsbury's and Tesco also have them on offer but I'm not sure they have the plethora of flavours that Waitrose have got online and in-store. In addition to the oats & honey, canadian maple syrup and the variety pack they also have cinnamon crunch, oats & chocolate, oats & hazelnuts, oats & berries and coconut crunch. I imagine however, in-store it may be that they have certain flavours depending on the size of the store.
Hope this helps anyone who eats them regularly.