This Amazon PPC case study collects results from ZonHack client accounts, as published on our advertising service page, and explains what drove each one. The headline numbers: one account went from an ACoS above 150% to below 10% over three years; a seasonal gift product went from zero to about $446,000 in roughly six weeks; and a stalled beauty brand doubled revenue in about three and a half to four months. None of these came from a single trick. Each came from a mix of advertising, listing work and inventory planning, and I’ll say plainly where results depended on more than ads.
Client names are kept private. The figures below are the ones we’ve published, not estimates. When you read them, look at the starting point as much as the result; my view is that the starting point tells you more.
Case 1: from ACoS above 150% to below 10%, across four brands
Starting point. A long-term client runs four distinct brands under one seller account. Early on, ACoS was above 150% and ROAS below 1.0, meaning ads were losing money on every sale they drove.
What we did. The owner agreed to aim for long-term growth rather than short-term wins. That agreement mattered more than any tactic, in my opinion. Over three years we optimized continuously and monitored closely, using a mix of tools and manual work.
Result. Consistent ACoS below 10% and ROAS above 9.0.
What I’d take from it. Turning around an account that bad takes time. The fix was patience and constant pruning, not one campaign rebuild. If ACoS is new to you, start with what ACoS stands for.
Case 2: a seasonal gift product, $0 to about $446K in six weeks
Starting point. A gift item that sells mainly in Q4. In October 2024 it had zero sales.
What we did. We launched it in mid-November with an aggressive advertising strategy timed to the holiday peak.
Result. About $117,000 in sales within two weeks, which I’d call exceptional, and around $446,000 by the end of the year, nearly 20,000 units. That was the entire inventory available.
The honest caveat. This kind of rapid growth isn’t typical. For most brands we prefer a steady, gradual approach over a shock-and-awe launch. Seasonal products are the exception, because the window is short and stock is the real limit.
Case 3: a women’s beauty brand, 2X sales in about four months
Starting point. Sales had plateaued for over eight months, despite well-optimized listings, strong images and a balanced ad strategy. The owner’s goal: double sales in six months.
What we found. Earlier advertising focused too narrowly on specific KPIs rather than on market share and growth.
What we did. Advanced listing optimization, category research, and a strategy combining Amazon PPC with TikTok ads.
Result. Revenue doubled in about three and a half to four months, beating the same period the year before, while ACoS stayed in check and inventory held.
What I’d take from it. A plateau often means the ads are optimizing for the wrong number. Efficiency metrics matter, but share of the category is what grows a brand. Off-Amazon traffic helped here too; our guide on how to drive external traffic to Amazon covers that side.
Case 4: a new household brand, $100K within three months
Short case. Clear lesson.
Starting point. A new household item brand that wanted an immediate presence on Amazon.
What we did. Optimized listings, strategic PPC campaigns and consistent inventory management from launch.
Result. $100,000 in sales after three months.
What I’d take from it. When you launch, don’t treat listings, ads and stock as separate jobs. They succeed or fail together.
Case 5: steady growth on established accounts
Not every result is a spike. Two examples from accounts we manage:
- A supplement brand did around $350,000 in November 2023 and $400,000 that December. In 2024 it passed half a million and reached close to $700,000 by December. This is full account management, not PPC alone.
- A summer-centric brand grew more than 30% year over year in most months between 2023 and 2024, including the off-season.
And one result that shows the limit of advertising: a multi-category brand ran out of stock around September and October after production problems. Sales still beat the prior January by almost $150,000, but they fell short of what the account was on track for. Ads can’t sell what isn’t in stock. I’d put that on a sticky note.
What these cases have in common
- Listings first. In most cases, listing work came before or alongside ad changes. Ads amplify a listing; they don’t fix one.
- The right goal. Case 1 aimed for long-term profitability; Case 3 aimed for growth and market share. Picking the goal changed the strategy.
- Inventory is part of PPC. Case 2 sold its whole stock; the multi-category brand lost sales to a stockout. Ad plans need stock plans.
- Time. The biggest turnaround took three years. The biggest spike was seasonal and atypical.
Honestly, if an agency promises Case 2 results for every product, be skeptical. In my view the realistic target is steady, profitable growth, with spikes where the season allows.
Applying this to your account
- Audit first. Our guide on how to conduct an Amazon PPC audit shows where wasted spend hides.
- Structure campaigns so you can see what each keyword earns; see Amazon PPC campaign structure.
- Add brand ads once Sponsored Products are profitable; see Amazon headline search ads (Sponsored Brands).
If you’d like us to look at your account, that’s our Amazon advertising management service, where these case studies are published with video walkthroughs.
FAQ
What is a good ACoS on Amazon?
It depends on your margins and goals. In Case 1, ZonHack brought an account from above 150% to below 10%, but a launch or growth campaign can justify a higher ACoS for a while.
How long does it take to fix a bad Amazon PPC account?
It varies. Some gains come within weeks, but the deepest turnaround here, from ACoS above 150% to below 10%, took three years of steady optimization.
Can Amazon PPC double sales?
It can contribute. In Case 3, revenue doubled in about three and a half to four months, but alongside listing optimization, category research and TikTok ads.
Are fast results like a $446K launch typical?
No. That case was a seasonal gift product launched into the holiday peak. Steady, gradual growth is more typical for most brands.
Does PPC work if I run out of stock?
No. Ads can’t sell inventory you don’t have, and a stockout can undo months of ranking and ad progress.
Where can I see these case studies?
On ZonHack’s Amazon advertising management service page, which includes video walkthroughs for several of them.
Last updated: October 5, 2026. Results are from ZonHack client accounts as published on our service page; individual results vary and depend on product, market, budget and inventory. Source: ZonHack, Amazon advertising management services. Further reading: Amazon Ads, Sponsored Products; Amazon Ads, Sponsored Brands; Amazon Ads, ACoS explained.
