FBA fee change alerts that find the orders Amazon overcharged you on.
Amazon re-measures products and changes FBA fees without telling you. SentryKit checks the fee on every listing each day and alerts you with the old fee, the new fee and what changed.
When a re-measure brings a fee down, Fee Recovery lists every order you paid the higher fee on, ready to download from your dashboard and claim back from Amazon.
Know when your FBA fee changes, and get back what Amazon overcharged.
A fee change shows up in your settlement long before anyone notices it. SentryKit tells you the day it happens, and when Amazon's own re-measure proves you were overcharged, it works out exactly which orders to claim. Pick one to see what you get.
Your FBA fee went up →
Old fee, new fee and the difference per unit, plus whether the size tier or measurements changed, so you know if it's worth disputing.
Amazon re-measured and the fee came down →
Every order before the re-measure was charged too much. The alert tells you a Fee Recovery report is ready.
Your Fee Recovery report →
Order by order: what Amazon charged, what it should have charged, and the overcharge to claim. Download it from your dashboard.
SentryKitFBA Fee Change Daily
FBA FEE INCREASE
Your FBA fee went up on this product.
INSULATED WATER BOTTLE, 32 OZ
ASIN: B0EXAMPLE1 · SKU: WB-32-BLK · US MARKETPLACE
Previous fee
$4.35
per unit
New fee
$5.12
per unit
Change
+$0.77
on every unit sold
What changed: Amazon re-measured the package. Size tier Small Standard → Large Standard.
Check the measurements. If Amazon got them wrong, request a re-measure.
View dashboard →Open Seller Central
Example based on SentryKit's daily FBA fee email, with the product details changed.
SentryKitFBA Fee Change Daily
FBA FEE DECREASE · RE-MEASURED
Amazon re-measured this product. Your fee came down.
VITAMIN C CAPSULES, 120 COUNT (2 PACK)
ASIN: B0EXAMPLE2 · SKU: VC-120-2 · US MARKETPLACE
Previous fee
$4.76
per unit
New fee
$4.35
per unit
Change
−$0.41
per unit
What changed: package dimensions and weight re-measured.
Fee Recovery report ready · orders from the 90 days before the re-measure were charged the higher fee
Download recovery report →View dashboard
Example with the product details changed.
SentryKitFBA Fee Recovery Report Download from dashboard
Ready to claim
$146.85
Older than 90 days
$38.20
Orders to claim
212
Order ID
SKU
Charged
Correct
Overcharge
Status
112-0000000-0000001
VC-120-2
$4.76
$4.35
$0.41
Claim
113-0000000-0000002
VC-120-2
$9.52
$8.70
$0.82
Claim
114-0000000-0000003
VC-120-2
$4.76
$4.35
$0.41
Over 90 days
111-0000000-0000004
VC-120-2
$4.35
$4.35
–
Correct fee
Tabs in the file: Summary · Orders to claim · How to file
Download report (.xlsx) →How to file
Example report. Order IDs and figures are illustrative.
Fee alerts by email, Slack, Microsoft Teams, ClickUp, a webhook or our API. Fee Recovery reports are in your dashboard on Pro.
How Fee Recovery Works
Amazon fixes the fee going forward. It doesn't refund the past unless you ask.
When a re-measure lowers your fee, the orders you already sold at the higher fee stay overcharged. Amazon will review a claim, but it won't find the orders for you. SentryKit does.
1
Amazon re-measures, the fee drops
SentryKit spots the lower fee and the change in measurements or size tier in its daily fee check.
2
We check every order
For each order of that SKU in the 90 days before the re-measure, we compare the FBA fee Amazon actually charged with the correct fee.
3
We list what's claimable
Orders charged too much are listed with the overcharge, including orders Amazon kept charging the old fee on after the re-measure. Orders already refunded or already reimbursed are left out.
4
You download it and file
Download the report from your dashboard, open a case in Seller Central and attach it. The file includes step-by-step filing instructions.
No commission. Reimbursement services typically keep 15–25% of what they recover. Fee Recovery is part of the Pro plan at $49/month: you file the claim and keep all of it (see Amazon FBA fee reimbursement). It covers FBA fee overcharges after a re-measure, not lost or damaged inventory; for those, see our guide to Amazon FBA inventory reimbursements.
When A Fee Goes Up
How to handle an Amazon FBA fee change.
Most fee increases come from Amazon's rate card or a price crossing into a new fee band. The ones worth fighting come from a re-measure that got your product wrong.
1. Check what changed
The alert shows whether the size tier, dimensions or weight changed. Compare them with your real packaged product, or the Fee Preview report in Seller Central.
2. Request a re-measure if it's wrong
Open a case with FBA support and ask Amazon to re-measure the product. Include your package dimensions, weight and a photo against a tape measure.
3. Claim the difference
Once Amazon corrects it and the fee drops, SentryKit's Fee Recovery report lists the orders charged the wrong fee. If the increase was legitimate, update your price or margins instead.
FBA fee change alerts and fee recovery: common questions.
Connect your Seller Central account to SentryKit and turn on the FBA Fee Change alert. SentryKit checks the FBA fulfilment fee on every listing once a day. When a fee goes up or down, you get an alert with the product, the previous fee, the new fee, the change per unit and what changed, such as a new size tier or re-measured dimensions and weight. It works in all 22 Amazon marketplaces, with fees in each marketplace's currency.
No. When Amazon re-measures a product and the fee comes down, the lower fee applies to new orders only. Orders you already sold at the higher fee stay overcharged until you open a case and ask for a reimbursement, with the order IDs. SentryKit's Fee Recovery report finds those orders for you.
Sellers and agencies report that Amazon reviews fee overcharge claims for roughly the last 90 days, so file as soon as you can. Fee Recovery checks every order from the 90 days before the re-measure, and marks orders that are already more than 90 days old today separately, because Amazon may decline those.
An Excel file with three tabs. Summary shows the SKUs Amazon re-measured, the fee before and after, and the total overcharge. Orders to claim lists every order with the order ID, SKU, units, the fee Amazon charged, the correct fee and the overcharge, and a status for each order. How to file walks you through opening the case in Seller Central. Orders Amazon already refunded, already reimbursed or charged the correct fee are left out of the claim.
FBA fee change alerts are on every plan. Fee Recovery is included on the Pro plan at $49/month, in all 22 Amazon marketplaces, and you download the report from your dashboard. There is no commission: whatever Amazon reimburses is yours.
No. SentryKit finds the overcharged orders and gives you a claim-ready file with instructions; you open the case in Seller Central and attach it. Amazon decides every claim, so SentryKit can't guarantee a refund, but you keep everything that's paid out.
No. Fee Recovery covers FBA fee overcharges after Amazon re-measures a product. Lost, damaged and returned inventory are a different kind of claim; our guide to Amazon FBA inventory reimbursements explains how those work.
Once a day, for every listing you track. Fee changes arrive in one daily FBA fee email rather than one email per product, and you can also send them to Slack, Microsoft Teams, ClickUp, a webhook or our API.
