Just cuz it is a submarine -- god knows like 30% of the internet these days is subtle marketing -- doesn't mean the stats are fake. Costco is able to go toe-to

Just cuz it is a submarine -- god knows like 30% of the internet these days is subtle marketing -- doesn't mean the stats are fake. Costco is able to go toe-to-toe with Walmart and Amazon for a reason: they have the margins. And as another poster mentioned, they're a publicly traded company with SEC filings that discuss revenue, costs, and other details; we can check those numbers.