Results

The numbers, with the context attached

Percentages without a starting point are marketing. Every figure below links to the account it came from, including how long it took and what it cost to get there.

Pulled from live accounts

+68% Revenue, year over year Volara Nutrition 31% Lower ACoS Volara Nutrition +61% Q4 revenue vs prior year Ironvale Kitchen 0 Days out of stock on hero SKUs Ironvale Kitchen 31% Of revenue now outside Amazon Bracken Field Outfitters +34% Total marketplace revenue Bracken Field Outfitters $9.4k Recovered in FBA reimbursements Bramblewood Pet Co. +7pt Gross margin on the subscription range Bramblewood Pet Co. $34k Monthly revenue by month five Halvard Supply 11wk To the first profitable month Halvard Supply 9 days To reinstatement Ottersey +41% Revenue after the variation merge Ottersey +22% Contribution margin Fernbrook Coffee 58% Of revenue on subscription Fernbrook Coffee

Each figure covers the engagement period described in that case study. None of them are averages across our client base, because an average across four categories would not mean anything.

Our results speak
for themselves

Sentinel Digital has grown through word of mouth, on the back of what our clients went on to do. Their numbers are the only pitch we have.

★★★★★ 06/04/2026

They told us to stop selling things

Our first month with Sentinel, they came back and said nine of our products were losing money on every unit and we should stop advertising all of them. That is not what an agency paid on ad spend tells you. Nine months on, revenue is up 68% on a smaller catalogue and I finally trust the reporting.

Date of experience:
06/04/2026

★★★★★ 03/18/2026

First Christmas I did not spend on the phone to freight

We sell cookware, so our year is really six weeks long. Sentinel built the Q4 plan in June and worked backwards from the shipping cutoff. We did not go out of stock for the first time in four years, and our January rank held instead of falling off a cliff.

Date of experience:
03/18/2026

★★★★★ 02/09/2026

Annoying and correct

We had tried Walmart in 2023, done about two grand a month, and written the channel off. Sentinel went back through what we had actually done and showed us we had never run it properly. Nine months later a third of our marketplace revenue is off Amazon. Worth the mild embarrassment.

Date of experience:
02/09/2026

★★★★★ 11/21/2025

The audit paid for itself in week three

We booked a one off audit because our accountant could not reconcile Amazon’s numbers. They found $9,400 in unclaimed reimbursements and a dimension error that had been overcharging us since 2023. Then they read a year of our return comments and worked out our bag was splitting in transit, which was costing us more than the fees were.

Date of experience:
11/21/2025

★★★★★ 09/30/2025

Weekly call, 25 minutes, actual decisions

I have worked with four agencies and this is the only one where the call ends with a decision rather than a deck. Same five numbers every Tuesday. If something is not working they say so before I have to ask, which sounds like a low bar until you have been on the other kind of call.

Date of experience:
09/30/2025

★★★★★ 08/12/2025

Good on the detail, honest when a test fails

They ran a DSP audience for us that did not work and shut it down at about two and a half thousand dollars rather than letting it run to protect the story. The next one returned over 3x. I would rather have an agency that stops things than one that never admits a test went nowhere.

Date of experience:
08/12/2025

★★★★★ 05/27/2025

Creative brief came from our own review data

The listing rewrite was built from the questions people were actually asking on our pages and the reasons they gave for returns. Conversion on our hero product went from just over 12% to nearly 18%. Nobody had ever shown me the objection list before.

Date of experience:
05/27/2025

★★★★★ 04/02/2025

Onboarding took longer than I wanted

Fair warning, the restructure took a fortnight and performance dipped while the campaigns relearned, exactly as they said it would. It was still a nervous two weeks. By week eight we were well ahead of where we started and I stopped worrying about it. I would just budget for the dip mentally next time.

Date of experience:
04/02/2025

Reviews collected from clients at the end of each engagement quarter.

We came to Sentinel after two agencies that both sent beautiful monthly decks and neither of which could tell me what a unit actually earned us. The difference here is that the first conversation was about our cost of goods, not our ad spend. They rebuilt the account around six products instead of twenty four, and the six that mattered got the budget the other eighteen had been quietly eating. I still get a short note every Tuesday telling me what changed and what they are doing about it. Three years of agencies, and that is the thing I would not give up.

Priya Raghunathan VP Growth · Volara Nutrition