About
I am a physical therapist who sells on Amazon and got tired of guessing.
Kovalchick Analytics is one person. That is a limitation and it is also the reason the work is any good.
Mathew Kovalchick, PT, DPT
I am a Doctor of Physical Therapy. I work per diem at UCLA Health in Santa Monica and I live in Venice, California. A few years ago I started a small Amazon brand selling exercise and recovery products, called PhysioSpace, because I kept writing the same home program on paper for patients and wanted something better to hand them.
Running that brand meant running its advertising. I tried the tools. The ones that did not make things worse still could not answer the only question I cared about, which was whether a campaign was making me money after cost of goods, Amazon fees, fulfilment and returns. They all reported ACoS. None of them knew what my products cost me.
So I built the thing that does, and it has been running on my own money since April 2026. Then a couple of other sellers asked whether I could point it at their accounts. That is what this is.
Why "Analytics" and not "Agency"
I am not selling you consulting hours or a strategy deck. I am selling a system that reads your account and acts on numbers, operated and watched by me. The name is meant to be literal.
What being one person means
The upside is that the person reading your account is the person who built the system, and you are never handed off. The most common complaint in public reviews of the bigger tools and agencies is account manager turnover, and it is structurally impossible here.
There is a clinical habit underneath it too. In physical therapy you measure, you keep a baseline, and you let the data settle the question. That is why you get contribution profit per product per week rather than a ratio, and why every number on this site comes with the window it was measured over.
It is also why the client list stays small. Past a certain number I would be triaging instead of thinking, and you would feel it in the work. Keeping it small is what lets me read your account properly every week.
What the record shows
Every figure here comes out of my own database and I will walk you through the derivation if you want it.
Measured weekly, per product
- Weekly contribution profit up 5.2x between 19 July and 30 August 2026, from $83 to $432
- Total advertising cost of sales of 24.4% across that period
- Profit and loss per product per week, including cost of goods, Amazon fees, fulfilment and refunds
- 4,181 successful account changes since April 2026, each with a before value, an after value and a reason
What per-SKU margin found
- Three products scored against their own breakeven returns of 1.95x, 2.33x and 3.17x, computed from their real cost of goods
- An account level view showed 6 profitable campaigns and 6 losing
- Scored properly it was 6 profitable and 13 losing, at a net $540 a month
- The account was being steered to one 3.00x target that fit none of the three products
The offer is simple
Let me audit your account for free. If the audit is any good you will know whether to keep talking, and if it is not you have lost twenty minutes.