Recover FBA fee overcharges. Zero Seller Central access required.

Weekly audit of size & weight misclassifications. We generate the Evidence Pack. You submit the cases. Pay only on recovered amounts.

Get a free 90-day audit View sample Evidence Pack

If Amazon reimburses $0, you pay absolutely $0.

Evidence Pack : Audit Snapshot
US Marketplace • 90 days
SKU Issue Δ/unit 90d Total
HOME-BAMBOO-01 Lg Standard → Sm Bulky +$3.16 $4,250
SUPP-WHEY-2LB Weight band error (2.1 lb) +$1.84 $2,816
PET-BED-XL Lg Bulky fee miscalc +$14.25 $11,400
Total (3 of 47 flagged): $18,466

Anonymized data from an actual client audit, Q1 2026

Fee errors are tiny per unit, but massive at scale

Every time Amazon's fulfillment center measures a product wrong, you pay the wrong fee for every single unit shipped. With a 90 day window to dispute, missing even one week means permanent margin loss.

Measurement friction

Dimensions drift silently due to FC scanners, manual inputs, and packaging changes. No one reconciles weekly.

Tier complexity

Every size tier has different weight bands and base fees. A 0.1 lb difference can shift an entire tier.

90 day cliff

Amazon's dispute window is ~90 days for dimension/weight issues. After that, the overcharge is permanently locked in.

Industry estimates: 0.5%–2% of FBA GMV lost to fee misclassification annually

Check what you're losing

Is it worth your time?

Conservative estimates based on industry data (0.2%–1% of GMV).

$5,000,000

Estimated trapped fees per year:

$10,000 – $50,000

Your share (80%) if recovered

$8,000 – $40,000

Our fee (20%)

$2,000 – $10,000

Estimate only. Actual recoverable amount varies by catalog profile, packaging history, and misclassification patterns.

A simple, secure process

From CSV export to reimbursement. No credentials, no bots, no risk.

No Seller Central access You submit the cases We only provide evidence
1

Export data

Download 5 standard reports from your Seller Central (takes ~10 min).

Fee Preview
Settlement Report
Inventory Ledger
Manage FBA Inventory
Reimbursements
2

We audit

Cross-reference packed dimensions, recalculate fees against Amazon's published tier tables, and rank every anomaly by Expected Value.

3

Evidence Pack

Receive a PDF + CSV with exact claim text to copy-paste. P0 cases (high EV) first, P1 batch list for smaller wins.

4

Submit & recover

You open the cases in Seller Central. Amazon triggers Cubiscan remeasurements. Reimbursements hit your payout balance.

Typical timeline: Cubiscan in days, reimbursement in 1–3 weeks after approval.
Start recovering your margin

What we detect

Phase 1 focuses on the highest-impact errors: size tier and weight misclassification on the US marketplace.

Size-tier misclassification

Packed dimensions place the product in tier X, but Amazon charges tier Y. Common after packaging changes or FC remeasurements.

Weight band errors

Shipping weight or dimensional weight places the SKU in the wrong weight increment — affecting the per-unit fee.

Charged vs. expected

We reconcile your Settlement Report (actual charges) against expected fees. Your Settlement Report is our single source of truth, never just estimates.

EV prioritization

Every anomaly is ranked by Expected Value so you submit only the cases worth your time. P0 first, P1 in batches.

Transparent math. Every claim shows: fee charged (Settlement) vs. fee expected (our engine) × units shipped = recoverable amount. Full audit trail, per SKU.

You get an Evidence Pack ready to submit

Executive Summary

Total recoverable, expected recovery, our fee, number of cases. Transparent math: charged vs expected, per SKU, with full audit trail.

Recommended Cases (P0)

High EV (≥ $50) opportunities for immediate submission. Includes ready-to-paste case text requesting an FC Cubiscan remeasurement.

Submit P0 cases first. We recommend 3 to 5 per day max to avoid Seller Support friction.

Batch List (P1)

Smaller wins ($20–$50 EV) grouped by error pattern. Designed to be submitted over time without overwhelming Seller Support.

Zero risk pricing

One plan. No subscription. No setup fee.
20%

of what Amazon actually reimburses to your account.

If we find $0, you pay absolutely $0
Weekly audit cycle + Evidence Pack delivery
Claims tracker + reimbursement follow-up
Clawback protection : if Amazon reverses, we credit your next invoice
Start with a free audit

Billed monthly in arrears, based on reimbursements actually credited to your Amazon balance (Reimbursements Report).

Security & compliance by design

We architected the service to minimize data exposure. You never share credentials, and we never touch your account.

Zero access required

No credentials. No Seller Central user permissions. No API tokens. Your account remains completely isolated.

You stay in control

Client opens every case. We generate evidence, you decide what to submit. Fully compliant with Amazon's Agent Policy & BSA.

PII dropped at ingestion

Order IDs are hashed or removed on upload. We only process financial and dimensional data, omitting anything personally identifiable.

Strict data retention

Raw CSV uploads are auto-purged 7 days after your Evidence Pack is delivered. We keep only anonymized, SKU-level aggregates with no order IDs. Everything is deleted when the contract ends.

Who it's for

Best fit

  • FBA sellers with $1M+ annual GMV
  • Multi-SKU catalogs (50+ active SKUs)
  • Brand owners or agencies managing high-volume accounts
  • Sellers who want to stay compliant (no bots, no third-party access)

Not a fit

  • Sellers under $100K/year or fewer than 50 SKUs
  • FBM-only operations (different fee structure)
  • Sellers wanting fully automated bot submissions (violates Amazon policy)
Check if it fits your catalog

Frequently asked questions

No. You export 5 CSV reports from your own Seller Central, send them to us securely, and we return a PDF + CSV Evidence Pack. We never ask for credentials, API tokens, or user permissions.
Five standard reports: Fee Preview, Settlement Report (Flat File V2), Inventory Ledger (90 days), Manage FBA Inventory, and Reimbursements Report (90 days). We provide a step-by-step export checklist with the exact Seller Central paths.
We compare your Settlement Report (the fee Amazon actually charged you) against the fee expected based on your packed dimensions and Amazon's published FBA fee schedule. The Settlement is our source of truth, not estimates or previews.
Every anomaly is scored by Expected Value (fee delta × units shipped × estimated approval probability). P0 cases (EV ≥ $50) go first. P1 cases ($20–$50) are batched for safe, paced submission.
Monthly in arrears. We verify the exact amounts credited to your Amazon account using your Reimbursements Report. Our invoice covers only funds actually reimbursed, never estimates. If Amazon claws back a reimbursement, we credit it on your next invoice.
Your first Evidence Pack is delivered within 7 days of receiving your CSVs. After submission, Amazon typically triggers a Cubiscan in a few days. Retroactive reimbursements usually hit your payout balance 1 to 3 weeks after approval.
Raw CSV files are automatically purged 7 days after your Evidence Pack is generated. We retain only anonymized aggregates (SKU-level metrics, no order IDs) for the duration of your contract, then delete everything.
Phase 1 covers the US marketplace. UK and EU (FR, ES) support is on our near-term roadmap. If you sell Pan-EU, get in touch, we can assess your US catalog now and flag EU-specific issues for when we expand.

Ready to stop the margin bleed?

Request your secure upload link. First audit is free — if we find $0, you pay $0.

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