Costco's Kirkland Signature: A Masterclass in Physical Availability

Kirkland Signature is reportedly worth $86 billion, per the Wall Street Journal. Costco spends almost nothing on traditional advertising to maintain it.

That's not a paradox. It's a case study.

Costco built one of the most valuable private label brands on earth by mastering something that most marketers underweight: physical availability. Not just getting the product on a shelf, but engineering an entire shopping system where being easy to find, easy to trust, and easy to buy does most of the persuasion work that other brands outsource to media spend.

This is what Never Always, Never Never: Strategic Marketing in an AI World by Patrick Gilbert calls physical availability in action. The Costco model is one of the cleanest real-world demonstrations of the concept.

The Numbers First

Costco reported $275.2 billion in total revenue in fiscal 2025, up from $227.0 billion in fiscal 2022. Membership fees alone hit $5.32 billion in fiscal 2025, compared to $4.22 billion in fiscal 2022. Those fees grew 9% year over year in both fiscal 2021 and fiscal 2022.

Kirkland Signature, launched in 1995, accounted for over a quarter of Costco's net sales in 2019 according to case research. A private label brand, built across wildly unrelated categories, from olive oil to dress shirts to vitamins, generating billions without a Super Bowl spot, without a celebrity endorsement, and without a brand campaign most consumers could name.

The mechanism behind this is worth understanding precisely.

Physical Availability Is Not Just Distribution

In Never Always, Never Never, Patrick Gilbert draws on Byron Sharp's framework from the Ehrenberg-Bass Institute to define physical availability as the ability to be found, bought, and chosen across the fragmented and unpredictable paths consumers take to make a purchase. Sharp breaks this into three components: presence (are you where the customer is looking?), relevance (can they actually buy what you're selling?), and prominence (can they find you easily when you're there?)

Costco engineers all three simultaneously inside a single building.

Presence is guaranteed by membership. If you're walking the warehouse floor, Kirkland products are everywhere. There's no competing shelf to get lost on. The assortment is curated and limited, which paradoxically increases visibility for every product that makes the cut.

Relevance is built through category breadth. Kirkland spans so many departments that members encounter it constantly, regardless of what they came to buy. The brand becomes familiar not through advertising frequency but through physical contact frequency.

Prominence comes from the treasure hunt effect. Costco's merchandising philosophy keeps the store in a state of controlled unpredictability. Products rotate. New items appear. Members scan the floor with genuine attention, which means Kirkland products get noticed in a way that doesn't happen when a shopper scrolls past a banner ad.

This is not an accident. It's the strategy.

The Warehouse as Media

Traditional brands buy media to manufacture attention. Costco builds a physical environment that generates attention on its own.

The $1.50 hot dog combo is the clearest example. Costco has held that price point for decades. It's not a loss leader they quietly eliminate. It's a public commitment, a price signal that communicates the brand's value promise more credibly than any tagline. Every time a member buys it, the message is reinforced: Costco is on your side.

The membership model does something even more structurally important. It pre-selects buyers who have already made a considered choice to be there. Unlike a casual shopper wandering into a grocery store, a Costco member has paid for access. That payment creates a psychological commitment. They want to get value from the relationship. Kirkland products, positioned as quality equivalents to national brands at lower prices, sit directly in the path of that motivation.

The store visit itself becomes a category entry point. Members aren't thinking "I need a Kirkland product." They're thinking "I need to restock the pantry" or "I need a gift" or "I should grab some snacks." Kirkland is simply the easiest, most trusted option available when those needs arise. Physical availability, not mental availability, is doing the heavy lifting at the moment of choice.

What Byron Sharp Would Say

The Ehrenberg-Bass Institute's research makes a compelling case that brands grow primarily through market penetration, reaching more buyers more often, rather than through deepening loyalty among existing customers. Byron Sharp's How Brands Grow argues that the key to growth is making a brand both mentally available (easy to think of) and physically available (easy to buy).

Kirkland's model is almost entirely weighted toward the physical side. Mental availability for Kirkland is relatively shallow outside the Costco membership base. Ask someone who doesn't shop at Costco to name a Kirkland product and most will come up blank. But that doesn't matter, because Kirkland's entire distribution is physically gated behind membership. The brand only needs to be available and trusted inside the warehouse. Outside it, awareness is irrelevant.

This is a genuinely unusual case. Most brands need broad mental availability to compensate for uneven physical availability. Kirkland inverts the model: near-total physical availability within a bounded audience, low mental availability outside it.

The bounded audience, it turns out, is large enough and loyal enough that the math works spectacularly.

The Light Buyer Problem Costco Doesn't Have

The Ehrenberg-Bass Institute's research shows that the majority of any brand's customers are light buyers, people who purchase occasionally and without much deliberate thought. These buyers are the primary driver of brand growth, not the loyal heavy users who already buy as much as they're likely to.

The membership fee filters out the most casual and infrequent shoppers before they ever enter the building. The people inside are already somewhat committed. But within the warehouse, Kirkland still depends on capturing low-consideration purchases across its category range. A member who regularly buys Kirkland olive oil might never have consciously decided to become a "Kirkland customer." They just reached for the familiar option.

Patrick Gilbert covers this light buyer dynamic in Never Always, Never Never, noting that brands don't grow by extracting more from their most loyal fans. They grow by winning small, incremental purchases from the masses. Kirkland wins those purchases not through persuasion but through proximity and trust.

The trust dimension here matters. Case research consistently frames Kirkland's success around quality parity with national brands. Members trust that Kirkland meets or beats the quality of branded alternatives. That trust, built through consistent product quality over three decades since the brand's 1995 launch, is the real asset. Advertising could have built that trust faster in theory. But physical consistency built it more durably.

The Distinctive Asset Hiding in Plain Sight

The Kirkland name and logo are, by traditional brand standards, unremarkable. There's no mascot, no distinctive color system that owns a category, no sonic identity. The distinctive brand assets are minimal.

And yet Kirkland functions as a distinctive asset in itself, because the name signals a very specific and consistent promise: this is the Costco version, which means it's good quality and cheaper than the branded alternative.

That's a powerful memory structure, as the Ehrenberg-Bass Institute would describe it. Consumers don't need to recall an emotional brand story. They need to retrieve one simple association: Kirkland equals value and quality inside Costco. That association, built through direct product experience rather than advertising, gets reinforced every time a member makes a Kirkland purchase and finds it satisfactory.

The umbrella brand strategy across unrelated categories reinforces this. Seeing Kirkland on a bottle of water, a bag of coffee, a cashmere sweater, and a bottle of fish oil in the same shopping trip creates cross-category familiarity that no ad campaign could replicate efficiently.

What the Costco Model Can't Teach You

There's a temptation to read this case study as an argument against advertising spend. It isn't.

The model works because of structural conditions that are extraordinarily difficult to replicate. Dense membership economics. Decades of trust-building through product consistency. Warehouse-scale purchasing power that lets them undercut national brands on price while maintaining margins. High store productivity that makes the warehouse floor itself a premium media channel.

A brand trying to copy the "no advertising, trust the product" approach without those foundations is not following Costco's strategy. They're just not advertising.

The relevant lesson is narrower and more useful: physical availability is a form of competitive positioning, not just a logistics function. The warehouse is built to maximize the three components Sharp identifies, presence, relevance, and prominence, at every point in the shopping experience. A deliberate marketing choice, even if it never shows up in a media plan.

At AdVenture Media, the Costco model comes up regularly when clients conflate marketing strategy with advertising strategy. They're not the same thing. Advertising is one tool for driving awareness and purchase consideration. Physical availability is the system that determines whether a buyer who's ready to act can actually complete a transaction.

Chapter 11 of Never Always, Never Never makes this explicit: your visibility is not just a matter of logistics or channel strategy. It's a form of competitive positioning.

The Real Takeaway

At a reported brand value of $86 billion, Kirkland Signature got there by making itself impossible to avoid inside one of the most visited retail environments in America, by earning trust through product quality rather than brand storytelling, and by building a membership system that concentrates a highly motivated buyer base in a controlled physical space.

None of that is a rejection of marketing science. It's an unusually pure application of it. Physical availability as strategy. The warehouse as the media. Consistency as the brand voice.

Most brands don't have the option to build a warehouse network and a membership model. But every brand can ask the same question that Kirkland answered so well: when my buyer is ready to purchase, how easy am I to find, and how much friction stands between them and a completed transaction?

If that answer is "not easy enough" and "too much friction," no amount of advertising will fix it. We covered a version of this problem in our analysis of why Warby Parker abandoned pure DTC and what it reveals about the limits of digital-only distribution.

The messy middle of any purchase decision is where physical availability wins or loses. Kirkland wins it, quietly, at scale, every single day.