If the sole reason you have a Costco membership is for the hotdogs, then I would agree, but for the vast majority of people the reason they shop at Costco is to buy items in bulk and save money compared to buying the same amount at the local chain grocery store.

It's not even because the hotdog itself is particularly good. It's your standard beef frankfurter and a fountain soda. There's no magic with the item from a culinary standpoint. It's the fact that they still haven't raised the price on it when they almost certainly could have done so silently a long time ago and nobody would have noticed or cared. It's the one act of upper management bothering to think about their customers for a change rather than just gouging every single cent they can get out of their members because some math formula told them that it was possible.