How Costco Makes Billions Selling Everything at Almost No Profit

Overview

Here is a business that should not work. They cap their markup at fourteen percent. They sell rotisserie chickens at a loss. They pay their employees far above industry average. They carry only four thousand products when a typical supermarket carries thirty thousand. And yet Costco is the third largest retailer on Ear

In this show

• Here is a business that should not work. They cap their markup at fourteen percent. They sell rotisserie chickens at a loss. They pay their employees far above industry average. They carry only four thousand products when a typical supermarket carries thirty thousand. And yet Costco is the third largest retailer on Earth with over two hundred and forty billion dollars in annual revenue and a stock price that has outperformed nearly every retailer in history. How do you build one of the most profitable companies in the world by barely making money on the things you sell? Dr. Andrade break down this paradox for us.
• The entire model rests on a single insight. Costco is not a retailer. It is a membership club that happens to sell things. Their membership fees generate roughly four and a half billion dollars per year and that number flows almost entirely to the bottom line. The merchandise itself operates at close to break-even. Their gross margin is around eleven percent compared to twenty-five to thirty percent at a traditional grocery store. But they do not need the merchandise to be profitable. Its only job is to be so compelling that members renew their annual fee. And they do.
• The renewal rate is over ninety percent worldwide. That is a subscription business with retention numbers that most software companies would envy. The genius is that every dollar of profit from membership fees is pure margin because the infrastructure costs are already covered by merchandise revenue.
• The operational efficiency is staggering. By carrying only four thousand SKUs instead of thirty thousand, every product moves in massive volume. That gives Costco incredible leverage with suppliers. They negotiate prices that competitors simply cannot match. And because they sell directly off pallets on a bare concrete floor with minimal merchandising, their labor and presentation costs per unit are a fraction of a traditional store. There is no back room. The warehouse is the back room. Forklifts restock during business hours right alongside shoppers.
• The rotisserie chicken is the perfect example of the strategy. They sell over a hundred million chickens a year at four ninety-nine, well below cost. They even built their own poultry processing plant to keep the price there. That chicken is positioned at the back of the store. To get to it you walk past everything else. The average member who comes in for chicken walks out spending over a hundred dollars.
• The limited selection is counterintuitive but it is backed by decision science. More choice does not increase satisfaction. It causes decision paralysis. At a regular supermarket you face twenty brands of ketchup and spend mental energy evaluating them. At Costco there are two or three, all pre-vetted for quality and value. Shopping is faster, less stressful, and members trust that whatever Costco carries has been curated. This trust is the foundation of their private label Kirkland Signature, which now generates over seventy billion dollars annually.
• A Kirkland product signals that Costco's buyers have found something as good as or better than the name brand and priced it dramatically lower. Members do not comparison shop Kirkland products. They grab them with confidence. That trust took decades to build and is nearly impossible for competitors to replicate.
• The treasure hunt is the other brilliant merchandising strategy. About twenty percent of Costco's inventory rotates constantly. One week there are designer sunglasses, the next week high-end cookware, then cashmere sweaters. These items appear without warning and disappear quickly. This creates urgency. Members learn that if they see something interesting they must buy it now because it will not be there next time. It also makes every trip feel like an adventure. You went in for paper towels and you left with a kayak. That unpredictability drives frequency.
• Costco members visit the store on average eleven times per year compared to seven or eight for competing warehouse clubs. More visits means more spend. And the treasure hunt items often carry higher margins than the core staples so they contribute disproportionately to profitability.
• Costco also pays its workers significantly more than competitors. That seems like it would hurt the bottom line. Karen why is that actually a strategic advantage?
• The starting wage at Costco is well above the retail industry average and long-tenured employees earn significantly more plus benefits including health insurance and retirement plans. On paper that looks expensive. In practice it is one of their smartest investments. Employee turnover at Costco is around six percent annually. The industry average is sixty to seventy percent. Every time a retailer replaces a worker it costs thousands in recruiting, hiring, and training. Low turnover means Costco's workforce is deeply experienced.
• Cashiers are faster, stockers are more efficient, and the institutional knowledge on the floor is enormous. Employees who are well-paid and respected genuinely care about the member experience. They do not just scan items, they engage. That labor quality shows up directly in member satisfaction and renewal rates. Wall Street has pressured Costco for years to cut labor costs. The company has refused every time because they understand that their people are a competitive moat, not a cost center.
• What makes the Costco model so durable is that every element reinforces every other element. Low prices drive membership. Membership fees fund operations. High volume gives supplier leverage. Supplier leverage enables lower prices. Limited selection increases efficiency and trust. Trust powers Kirkland Signature. Happy employees drive member loyalty. Member loyalty drives renewal rates. It is a flywheel where each component accelerates the others. Competitors have tried to copy individual elements but the system only works as a whole.
• You cannot just offer low prices without the membership revenue to subsidize them. You cannot build a trusted private label without decades of curation credibility. And you cannot match the employee culture overnight. Amazon, Walmart, and others have studied this model obsessively and none have cracked it because the competitive advantage is not any single strategy. It is the entire interconnected system built over four decades of disciplined execution.