Versioned Amazon fee data for platforms that price, quote or plan for sellers.
We maintain a verified Amazon FBA fee dataset for the US and EU: referral tiers, fulfilment fees by size tier, storage, aged-inventory and low-inventory fees, inbound placement, return processing, the fuel surcharge and the peak-fulfilment uplift table. Each month is published as an immutable snapshot with a version number, so you can pin a version, diff two versions, and know exactly which rate card a quote was built on.
| You get | Why it matters |
|---|---|
Versioned JSON dataset (/rates/fba-us-2026.json and EU equivalent) | Stable field names and an explicit dataset version you can log next to every quote |
| Monthly snapshot feed + machine-readable diff | Feed the changes into your own repricing or margin alerts without re-scraping Amazon |
| Source trail per figure | Each value points at the Seller Central rate card it came from, so your auditors can follow it |
| Change history | Answer "what did this SKU cost to fulfil in August" with a pinned version |
| Commercial licence & SLA | No attribution obligation, an uptime commitment, and a named contact |
Not sure which fits? Tell us the volume and where the numbers surface in your product — we will size it with you rather than guess.
You can evaluate everything before talking to us: the JSON is public and CC BY 4.0, and the snapshot index lists every version.
Open snapshot index Read the API docs| Question | Answer |
|---|---|
| How fresh is the data? | Re-verified monthly; every dataset carries a version and the date it was last verified, and each figure cites the rate card it came from. |
| What if Amazon changes something mid-month? | We re-publish with a bumped version and record the revision rather than editing the old month in place. |
| Can I cache it? | Yes within your listed call volume; the webhook means you mostly will not need to poll. |
| Why pay when it is CC BY? | CC BY still obliges you to attribute, gives you no SLA, no support and no right to redistribute. A licence buys convenience and cover, not access. |
Licensing enquiries: support@ylishi.tools · see also fee-change alerts and the calculator.
Annual license for the verified 2026 rate dataset (JSON + changelog), commercial use, one company seat. Billed via Paddle (card / PayPal). License key is emailed within 24 hours of purchase.
Enterprise / multi-seat scopes above: request a quote