I thought that you were intentionally misspelling Cliff Bar, but I see on Amazon that Clif Bloks are an actual product that I never noticed previously. I am sure that I have not seen them at a regular Costco, but they might have them at the Business Center where they have a much larger selection of products for people who have binding machines and convenience stores.
Love the way Android auto-correct changed vending machine to binding machine in my last post. It gives me comfort to know that artificial intelligence still has a ways to go before it will be able to take over the world.