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Hydros water filter bottle
Amazon Case Study

Profitable
by Design

How Parker-Lambert transformed Hydros's Amazon profitability in just seven months without sacrificing sales volume.

Client Hydros
Service Amazon Management
Timeline 7 Months
The North Star Metric

Volume without profitability
isn't growth.

Hydros had a great product and a happy customer base, but their Amazon business wasn't profitable. The goal wasn't to grow at all costs. It was to grow the right way, by fixing the unit economics first.

TACoS (Total Advertising Cost of Sale) = ad spend as a percentage of gross revenue. The lower it is, the healthier the business.
The Challenge

One clear diagnosis

Ad Spend Eating Profits
The cost of advertising was consuming a significant share of the operating budget, making sustainable growth impossible without first fixing profitability.
TACoS
Weak Page Conversion
Even with ad traffic arriving, the product pages weren't converting at an acceptable rate. Every click was more expensive than it needed to be.
Conversion
Ad-Dependent Volume
Too much revenue was coming from paid traffic. Organic sales were underperforming, leaving the brand exposed to ad cost fluctuations.
Organic Growth
The Strategy

Two levers.
One compounding result.

Fix the pages first. Then fix the ads. Better conversion rates make every ad dollar work harder, which creates room to cut spend without cutting volume.

Swipe to explore →
Hydros product
Strategy · Lever 1

Listing Optimization

✍️
Titles and Bullets
Rewrote titles and bullet points to be more clear, compelling, and SEO-optimized. Amazon resists title changes, but the team got it done.
Copywriting + SEO
📖
Product Descriptions
Refined the brand story through product setup data and descriptions alone, without touching the visual design the brand was happy with.
Conversion
Strategy · Lever 2

Ad Restructure

✂️
Campaign Simplification
Trimmed non-performing campaigns and targets. Reduced complexity to concentrate budget on the highest-converting placements.
Efficiency
📈
Organic-First Focus
Shifted the goal from ad-driven volume to organic rank. Better listings improved keyword indexing, reducing long-term reliance on paid traffic.
Organic Growth
The North Star Result
0%
Reduction in TACoS
From spending a damaging share of revenue on ads, to a dramatically healthier margin profile
Ad Spend
0%
Reduction in Ad Spend
Without a corresponding drop in gross sales volume
ROAS
0%
Improvement in ROAS
Remaining campaigns performed significantly better
Page Conversion
0%
Conversion Rate Increase
Achieved through copy and content alone, no visual redesign
Organic Sales
0%
Growth in Organic Sales
Higher-value, more sustainable revenue replacing ad-driven volume
How It Compounds

Better pages make
every ad dollar work harder.

Higher conversion rates lower the effective cost per sale, which creates room to cut ad spend. Cutting ad spend improves TACoS. Improved TACoS means more profit to reinvest in growth. The flywheel turns itself.

Key Takeaways · 1 of 2

What this case teaches

Fix conversion before scaling ads
Pouring ad budget onto a poorly converting page is expensive. Every dollar of conversion improvement compounds across all traffic, paid and organic.
Strategy
TACoS is the real health metric
Revenue and ROAS alone can be misleading. TACoS tells you what percentage of your total business is subsidized by advertising, and that's what determines profitability.
Profitability
Key Takeaways · 2 of 2

What this case teaches

Copy and content move the needle
A 74% conversion rate improvement with no visual redesign is a powerful reminder that words and structure on a product page carry enormous commercial weight.
Listing Optimization
Organic sales are the goal
Ad-driven sales require ongoing investment. Organic sales compound over time. Shifting the mix toward organic is how brands build durable Amazon businesses.
Long-Term Growth
"

Our goal was to significantly reduce ad spend without reducing overall volume. That became the foundation everything else was built on.

Dylan Rhodes
Principal & Founder, Parker-Lambert
Parker-Lambert
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