Amazon measured your product wrong. You have been paying for it ever since.
It is the most expensive error in FBA and the least visible, because an inflated fulfillment fee looks exactly like a normal fulfillment fee on your statement.
How it happens
When your inventory arrives at a fulfillment center, Amazon measures and weighs a sample unit on automated equipment. That measurement sets the size tier that determines your fulfillment fee, your storage fee, and your surcharges — for every unit of that SKU, from then on.
It goes wrong in ordinary ways:
- A soft-sided or compressible product is measured while compressed, or while it is not
- A poly-bagged item is scanned with air in the bag
- Packaging changed between production runs and the record never updated
- A single sampled unit was an outlier
- The scan simply misread, by a fraction of an inch, at a tier boundary
A fraction of an inch at a tier boundary is the whole problem. The fee difference between adjacent size tiers is not a fraction — it is a step change, and it applies to every unit you sell.
What it costs
The damage is not the size of the error. It is the size of the error multiplied by your sales velocity multiplied by how long nobody noticed.
Illustrative figures, not a quote. Your actual exposure depends on size tier, weight, category, and velocity.
Then there is the second cost, which most sellers never think about: for those five months, your unit economics were wrong. You may have cut ad spend on a SKU that looked unprofitable, or discounted one that looked healthier than it was. Bad fee data corrupts every decision downstream of it.
Why this is where the money is
Since March 31, 2025, lost and damaged inventory reimburses at manufacturing cost rather than sale price. Fee overcharge refunds were not changed — an incorrect fee refunds the actual dollar amount you were overbilled.
So the category that every reimbursement service was built around got substantially devalued, while the category most of them treat as a footnote did not. That is the gap FeeBulldog was built to work.
How we recover it
Detect
We compare the dimensions and weight Amazon has on file against what your product actually is, and against the fees you were charged. Discrepancies at tier boundaries get flagged first, because that is where the money is.
Prioritize
Amazon caps how many remeasurement requests an account can submit per month, and a product cannot be remeasured again immediately after a recent remeasurement. That cap is a real constraint, so requests get spent on the SKUs with the highest sales velocity and the largest per-unit error — not alphabetically, and not on whatever came up first.
Substantiate
Remeasurement is one route. Independent measurement evidence, packaging specifications and supplier documentation support a fee investigation on their own, and are often what turns a denial into a payment on appeal.
Recover and correct
We claim the overcharged fees within the dispute window, and — the part that matters most — we push the corrected measurement onto the record so the overcharge stops. On a high-velocity SKU, the forward saving frequently exceeds the refund.
The clock: fee disputes have their own deadline, separate from the 60-day reimbursement window, and remeasurement requests are rate-limited monthly. Both are reasons this cannot be a once-a-quarter exercise.
Find out what Amazon owes you.
A free audit takes ten minutes to set up. You get a findings report with real dollar figures, and no obligation to do anything with it.