Costco aims for a low ~17% margin on most of their products
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Costco is what Amazon wishes it could be, if it didn’t fall down the rabbit hole of being a rebadged Ali Express.
https://boingboing.net/2020/09/25/costco-co-founder-to-new-c...
(Costco hasn't raised the price on their infamous $1.50 hot-dog-and-soda combo since 1984)