FBA Fee Calc

Privacy

FBA Fee Calc (Amazon FBA Fee Calculator: Real Profit). Last updated 2026-09-11.

The short version

The extension does not send anything anywhere. It reads the Amazon product page you have open, does the fee math locally, and stores your settings (and the first listing you looked at, for the free tier) in the browser's local storage on your device. That is the whole story.

What the extension collects

• Nothing leaves your browser. No analytics, no telemetry, no accounts. The extension contains no network code at all — this is enforced by an automated build gate, not just promised here.
• Local storage: your calculator inputs (category, weight, costs) and the identifier of the first listing you opened, stored in chrome.storage.local on your device. Clearing the extension's data or removing the extension deletes it.
• Page access: the content script runs on Amazon product pages to read the price, category breadcrumb, and package dimensions that are already visible on the page.

The website

• Pro waitlist: if you submit your email, it is stored in the waitlist list on our server and used only to email you when Pro opens. You can ask to be removed any time via the contact on the store listing.
• Install counter: the landing shows a count of installs. It is a single number; it tracks nothing about you.
• The landing itself loads no third-party scripts or fonts from other domains.

Permissions and why

• storage — to remember your settings and the free-tier state on your device.
• Host access to www.amazon.com — to read the listing facts (price, breadcrumb, package details) on the page you are viewing.

Contact

Use the support email on the Chrome Web Store listing.