How Harpex Protected Sales During a Seasonal Slump with Quartile

Precision is more than a product feature for Harpex. It's the foundation of the brand.

Harpex manufactures high-performance air gun pellets for sport shooting, target practice, and hunting. Through advanced technology, rigorous quality control, and premium materials, the company develops innovative products designed to deliver exceptional consistency, reliability, and performance.

What sets Harpex apart is its commitment to doing things differently. Rather than following conventional product designs, the brand invests in distinctive engineering and innovation to serve shooting enthusiasts and professionals who expect more from their equipment.

With a presence in Brazil and international markets, Harpex brings that same commitment to excellence to every stage of its business, including how customers discover and purchase its products on Amazon.

The Challenge

For Harpex, producing exceptional air gun pellets wasn't the challenge. Keeping sales strong when fewer customers were shopping for them was.

The air gun pellet category experiences a predictable seasonal slowdown. Demand typically begins declining in June and doesn't recover until October, creating a difficult stretch for brands looking to maintain consistent sales.

In 2025, category demand fell 12% from July to August, followed by another 14% decline from August to September. The following year brought similar concerns. By August 2026, demand had already dropped 8% from the previous month, with projections indicating a potential decline of more than 14% heading into September.

For Harpex, the implications were clear. Even with a premium product and strong technical differentiation, a shrinking pool of potential shoppers could threaten sales momentum.

But the brand wasn't willing to accept declining performance simply because the season was changing.

Harpex wanted to protect its sales volume, maintain its competitive presence, and make the most of every customer interaction during the off-season.

The opportunity wasn't necessarily to bring more shoppers into the category. It was to make sure the shoppers who were already there could find Harpex's products, understand their value, and feel confident making a purchase.

That's where Quartile came in.

Why Quartile

Harpex had already invested in the elements that make a product stand out: thoughtful engineering, advanced materials, innovative design, and consistent quality.

What the brand needed was a partner that could help translate those advantages into stronger performance on Amazon.

Quartile brought a combination of marketplace expertise, search performance insights, and strategic guidance to address the challenge from a different angle.

Rather than focusing solely on driving more traffic during a period of declining demand, the Quartile team recognized an opportunity to improve the effectiveness of Harpex's existing product listing.

The approach was rooted in a simple principle: when fewer customers are shopping, every visit matters more.

By identifying high-performing search terms and aligning them with Harpex's product positioning, Quartile could help the brand strengthen discoverability while making its product benefits easier to understand.

The partnership brought together two complementary strengths: Harpex's deep understanding of precision-engineered products and Quartile's expertise in how customers search, evaluate, and purchase those products on Amazon.

Together, they set out to make the listing work harder, not just during peak season, but throughout the year.

The Solution

Quartile started by looking at how seasonal demand affected the way shoppers searched for air gun pellets.

The team identified an important opportunity: while certain keywords performed particularly well during peak season, others continued generating relevant traffic and conversions throughout the year.

Rather than relying on one group of search terms, Quartile developed a balanced strategy that combined both.

This helped align Harpex's listing with seasonal shopping behavior while maintaining relevance among customers who continued searching for air gun pellets during slower months.

But keywords alone weren't enough.

Harpex's products offered distinctive technical features and specialized applications. The challenge was making those advantages immediately clear to customers browsing Amazon.

Quartile refined the product title and Item Highlights to communicate the product's intended uses, including target shooting and lawful hunting and small-game applications, alongside its technical characteristics.

The team then took the optimization further by restructuring the product bullet points around a more compelling narrative.

Instead of simply listing specifications, the updated content helped shoppers understand what made the product valuable, how it could be used, and why its features mattered.

High-performing search terms were integrated naturally into the messaging, connecting product discoverability with a clearer shopping experience.

The result was a listing designed to do more than attract attention. It was built to help relevant shoppers move from discovery to purchase.

For Harpex, the strategy reinforced the brand's commitment to precision and quality. For Quartile, it was an opportunity to demonstrate how a focused, insight-driven approach could create measurable value without depending on stronger market demand.

Results & Impact

The partnership delivered meaningful improvements during one of the category's most challenging seasonal periods.

Despite the broader decline in demand, Harpex maintained its total sales while improving conversion efficiency and growing organic revenue.

The strongest results reported in the case study submission included:

• 7% increase in ad conversion rate: The product listing became more effective at turning visits into purchases, helping Harpex capture more value from available traffic.

• 4% growth in organic sales: Even as category demand declined, Harpex generated more sales through organic traffic, reinforcing the value of improved product discoverability and content.

• 5% improvement in Total Advertising Cost of Sale (TACOS): Stronger conversion performance supported greater advertising cost efficiency, allowing Harpex to maintain sales more effectively.

These outcomes were especially significant because they came during a period when the category typically experiences considerable pressure.

Harpex wasn't relying on a surge in customer demand to drive results. The brand was making better use of the opportunities already available.

The increase in organic conversion rate showed that more of the shoppers discovering Harpex's products were completing purchases. Organic sales growth reinforced that improvement, while stronger TACOS efficiency demonstrated the broader value of a more effective listing.

For Harpex, the results validated its decision to take a proactive approach to seasonality and showed how strategic SEO and product storytelling can help brands protect sales and strengthen efficiency even when market conditions are working against them.

The biggest win wasn't simply maintaining sales. It was building a more effective listing that could convert better, support organic growth, and operate more efficiently in a declining market.

Ongoing Value & Future State

For Harpex, the partnership with Quartile created value beyond a single seasonal period.

By improving how its products are discovered and presented on Amazon, the brand established a stronger foundation for performance throughout the year.

The optimized listing now brings together relevant search terms, clear technical information, and product-focused storytelling that reflects the quality and innovation behind Harpex's pellets.

These improvements provide a foundation for continued refinement as customer demand changes across peak and off-peak periods.

More importantly, the experience reinforced the value of pairing product expertise with specialized marketplace strategy.

Harpex understands what makes its products exceptional. Quartile helps translate those strengths into a shopping experience designed to support discovery, consideration, and conversion.

As Harpex continues serving sport shooters, professionals, and enthusiasts across international markets, this combination of engineering excellence and strategic marketplace expertise provides a valuable foundation for future growth.

The partnership demonstrates that strong brands don't have to rely exclusively on favorable market conditions to improve performance. With the right insights and a willingness to optimize, they can find opportunities to strengthen their business even during slower seasons.

For Harpex, precision has always been the standard.

With Quartile, that same commitment to precision now extends to how the brand approaches its Amazon performance.

>>>Ready to achieve results like these? Book a demo with a Quartile expert<<<