I noticed Costco does that with Power Bars. They make an assortment of 24 bars but one fourth are vanilla, which I am not all that fond of. Power Bar must make the assortments up to include excess inventory and sell it to Costco at a low ball price. I'm not complaining because it is good marketing. I've tried a few times to like the Vanilla bars but it just didn't happen. LOL
My husband likes the Banana flavored Power Bars.