Market Research Plan:
Costco's Kirkland Premium
Digital Merchandising
A two-phase research study exploring whether a curated "Kirkland Premium" online landing page could translate Costco's in-store treasure-hunt experience into a digital format — and which design cues most influence purchase intent.
Overview
Costco's Kirkland Signature brand generates over 25% of the company's total revenue, built almost entirely on a warehouse shopping experience — physical discovery, bulk value, and the thrill of finding something unexpected. As Costco scales its e-commerce operations, a real tension emerges: the website doesn't naturally support that same sense of discovery.
This project explores whether a curated "Kirkland Premium" landing page featuring limited-time drops of organic dried fruits and nuts could credibly translate the in-store treasure-hunt dynamic into a digital format, and which design cues — sustainability, scarcity, premium packaging — actually drive purchase intent.
Dried fruits and nuts were chosen deliberately: the category is growing, health-forward, shelf-stable, and seasonal, making it well-suited for limited-edition digital drops. And because Kirkland already has strong credibility in this space, any differences in perception across landing page variants can be attributed to the design itself rather than skepticism about the product.
Research Question
How do different versions of a "Kirkland Premium" landing page featuring limited-time drops of dried fruits and nuts shape consumers' perceptions of trust, quality, sustainability, and premium value — and how do those perceptions translate into stated likelihood to convert online?
The question evolved across two phases. The qualitative phase opened things up: what do members actually think about Kirkland, and does the online experience feel meaningfully different from the warehouse? The quantitative phase then zeroed in: of the specific design levers, which one actually moves purchase intent?
Phase I Qualitative
Individual in-depth interviews (IDIs) were selected over focus groups for a clear reason: this project is about personal meaning-making. How does someone weigh trust against price? What makes an organic claim feel genuine rather than performative? Those questions get muddied in group settings and can't be observed from the outside.
20–30 Costco members aged 25–65, spanning in-store regulars, hybrid shoppers, and digital-first members. Topics: Kirkland brand perceptions, the online vs. in-store discovery gap, and reactions to premium and sustainability claims.
Costco employees and managers in merchandising, e-commerce, and category management. Topics: operational feasibility, observed differences in online vs. in-store behavior, and what makes the treasure-hunt feel work.
One notable design constraint: Costco does not publicly disclose category-level Kirkland sales data, making traditional benchmarking impossible. This actually strengthens the case for qualitative work — member interviews can surface signals like how often they choose Kirkland over national brands and what the perceived price advantage actually feels like, in ways hard data can't.
Research Instruments
Phase II Quantitative
Building on qualitative insights, the survey experiment was designed to answer a more precise question: which specific design element most drives conversion intent? Respondents were randomly assigned to one of three landing page mock-ups and rated purchase likelihood, perceived quality, trust, and value on Likert scales.
Sustainability
Organic sourcing, eco-packaging, and ethical certification claims front and center
Scarcity
Limited-time drops, countdown urgency, seasonal exclusivity messaging
Premium Packaging
Elevated visual design, quality imagery, premium brand presentation
The survey would be built in Qualtrics and recruited through an external panel (Prolific or Dynata), given no direct access to Costco's member list. Isolating the three cues was the core methodological choice — in the real world they appear together, but separating them was the only way to determine which one is actually doing the work.
Variants showing higher conversion likelihood without eroding trust would be candidates for broader rollout. Designs that generate urgency at the expense of trust signal a need to iterate. Those that don't move any metric don't justify further investment.
Key Learnings
The biggest strategic tension isn't sustainability vs. affordability — it's that Kirkland's core promise is reliability. A "limited-time" or "premium" framing inherently adds uncertainty. The real design question is whether excitement can coexist with trust.
The online discovery gap is real. Costco's website is built for replenishment, not serendipity. A dedicated landing page for limited-edition drops would need to feel qualitatively different — not just a filtered category page.
Category selection is a methodological choice, not just a topic. Using a category where Kirkland already has strong credibility meant differences across variants could be attributed to design, not product skepticism.
Aligning research design with decision stage matters. Qualitative work surfaces language and mental models. Quantitative work requires tighter focus on comparison and thresholds for action. Running them in the wrong order would have weakened both instruments.