As a follow up, Costco did refund my money. They did a search, and one person returned this bag a few days after purchasing. That same person also returned a TV, a computer and some other electronic items, all a few days after purchase. They rightfully wouldn't give me any more information or talk about if they do anything legally, but that person won't be a Costco member anymore. I feel bad for whoever bought the computer or TV missing parts (or being something else entirely.

They did a search for me, nearest Costco with any in stock is about 45-60 minutes away. They had 4 in stock, but won't hold any for me, so hopefully one will be there when I get there tomorrow.