Costco's gross margin on merchandise sits around 13%. Walmart runs near 25%. Target exceeds 30%.
By every conventional retail benchmark, Costco is operating an underperforming product business. But that's the wrong frame entirely.
Costco's actual product is the membership. The warehouse is delivery infrastructure.
When you structure a business this way, the customer relationship changes at a structural level. Costco is no longer incentivized to extract margin from individual transactions because the annual fee has already secured the profit. That frees them to pass genuine savings to members, which deepens trust, which drives renewals the only metric that actually matters to the P&L.
The $1.50 hot dog and soda combo, held at that price since 1985, is not a loss leader. It is a trust signal so consistent it has become brand mythology. Costco's CEO once told an executive who wanted to raise the price: "I will kill you." The product economics support the commitment.
If your revenue model requires you to maximize margin on every transaction, you are structurally incentivized against your own customer. Costco removed that conflict by design.
What does your current business model incentivize you to do to the person buying from you?