Overview
A niche pantry brand had been on Amazon since 2019, selling vinegar products (white vinegar, red vinegar, apple cider vinegar). Despite a growing wholesale presence and a clean DTC business, the Amazon channel had plateaued at $150,000 to $200,000 in annual sales for years. The brand was profitable but not scaling. By mid-2024, the channel had become a maintenance line item rather than a growth driver.
The thesis going in was that the plateau wasn't a strategy problem. It was an infrastructure problem. Specifically: the brand was running FBM (fulfilled by merchant) exclusively, which limited Prime eligibility, slowed delivery promises, and dragged conversion rates structurally. No amount of PPC optimization was going to break the plateau without fixing the fulfillment layer.
The engagement started in August 2024 with a full diagnostic and structured intervention plan. The brand moved to an FBM-FBA hybrid model, rebuilt listings from scratch, restructured PPC for the first time with proper segmentation, and reframed advertising as a growth lever instead of a cost center.
Within six months, conversion rates moved from 12 percent to 18 percent. Prime orders grew to 70 percent of total. The Buy Box win rate improved 25 percent. Monthly ad spend scaled deliberately from $1,500 to $4,000-$5,000 as the infrastructure could support it. The plateau broke.
Where the account was
Five years on Amazon. Multiple agency relationships over those years. Annual revenue had plateaued at $150,000 to $200,000 for several consecutive years. Strong DTC business and growing wholesale presence outside Amazon, but the marketplace channel was treated as an afterthought.
The catalog covered three vinegar product lines (white vinegar, red vinegar, apple cider vinegar). PPC was running at acceptable ACOS but the campaigns were small (~$1,500 monthly spend) because the conversion rate ceiling capped what spend made sense. Every previous agency had tried to fix the plateau through ad optimization. None had touched the infrastructure underneath.
The brand owner described it as "we've been at $150K for years and I don't understand why we can't break out."
What was broken
The diagnostic identified four infrastructure issues, none of which were PPC-related at their core.
- FBM at scale was throttling conversion. All SKUs were fulfilled by merchant. No Prime badge on any listing. Delivery promises ranged from 5-9 business days. Category competitors offered 2-day Prime delivery. The conversion rate ceiling was structural.
- Listing quality below category baseline. Images lacked zoom functionality and didn't highlight product benefits through infographics or lifestyle visuals. Bullet points weren't used strategically. Backend keywords were missing entirely. Product dimensions were inaccurate in places.
- PPC lacked structure and intent. No campaign naming convention to track objectives. Multiple parent products mixed into the same campaigns making ASIN-level analysis impossible. No negative targeting in auto/broad campaigns. Keyword cannibalization across match types. No Sponsored Brand or Display presence.
- Customer trust gap. Competitors had thousands of reviews. The brand had only a few hundred. Reviews mentioned issues like leakage during shipping, hurting both perception and conversion.
What we changed
Four work streams.
Fulfillment transformation
Migrated the top-velocity SKUs to FBA while maintaining FBM on slower-moving and bulk items. This balance improved delivery speed for the products most customers were buying while preserving margin on items that didn't benefit from FBA economics.
By mid-2025, Prime orders represented 70 percent of all sales and the Buy Box win rate had improved by 25 percent.
Listing rebuild
Rebuilt every listing from the ground up. Used Brand Analytics and Helium10 to identify the most valuable keywords. Rewrote titles, bullets, and backend terms for discoverability. Developed A+ Content and a Brand Story highlighting product purity and quality. Added lifestyle imagery, infographics, and videos. Consolidated variations under parent listings so reviews rolled up properly.
Conversion rate moved from 12 percent to 18 percent over the first six months as listing improvements compounded with the FBA-Prime effect.
PPC structural rebuild
Built campaign architecture from scratch. Implemented a clear naming convention tied to campaign intent. Separated parent products into their own campaigns. Deployed negative targeting across auto and broad campaigns. Eliminated keyword cannibalization by giving each match type its own campaign. Launched Sponsored Brands and Sponsored Display for the first time.
Monthly ad spend scaled gradually from $1,500 to $4,000-$5,000 as the structure proved out. Advertising moved from cost center to growth lever.
Review and trust building
Implemented Vine for accelerated review velocity. Reinforced packaging to address leakage complaints. Updated product copy and imagery to set accurate expectations. The combination drove review count up and review sentiment improved.
Conversion rate, before vs. after
Conversion rate before and after the six-month engagement. The lift came from FBA-Prime activation, listing rebuilds, and accurate-expectation copywriting.
Monthly PPC spend, before vs. after
Monthly PPC spend scaled from $1,500 to roughly $4,500 as the underlying infrastructure could support it. Spend grew because results allowed it, not because of speculative testing.
Summary: before vs. after
| Metric | Before (Aug 2024) | After (Mid-2025) |
|---|---|---|
| Annual revenue range | $150K-$200K | Scaling out of plateau |
| Fulfillment model | FBM only | FBM-FBA hybrid |
| Prime orders share | 0% (no Prime) | 70% |
| Conversion rate | 12% | 18% |
| Monthly PPC spend | $1,500 | $4,000-$5,000 |
| Buy Box win rate | Baseline | +25% |
| PPC structure | Single portfolio, no naming | Intent-segmented, named campaigns |
Results
- Conversion rate: 12 percent → 18 percent in six months
- Prime orders grew to 70 percent of total by mid-2025
- Buy Box win rate improved 25 percent
- Monthly PPC spend scaled from $1,500 to $4,000-$5,000
- Account broke out of the $150K-$200K annual plateau that had held for years
- FBA share of catalog grew from 0 to core SKUs at engagement end
- Account became Prime-eligible on top revenue-generating SKUs
What we learned
Some plateaus are PPC-shaped and some are infrastructure-shaped. Diagnosing which kind you have is the work most agencies skip. They reach for ad optimization first because that's the visible lever.
FBA-Prime eligibility is not a tactical detail. It's a structural conversion rate multiplier in most categories. Brands that stay FBM-only at scale are leaving conversion on the table that no amount of bid optimization can recover.
Listing accuracy beats listing aspiration. The temptation is to make the product look great. The better approach is to make the product look accurate. Customers who get what they expected don't return it. Customers who expected something different do.
Promotional rhythm matters more than promotional intensity. A monthly cadence with structured participation in category events outperforms occasional big pushes.
Detailed monthly performance data is available on request to qualified prospects.