The short version: the calculator runs in your browser and nothing you type is sent to us. The longer version covers the small amount of data any website receives, and the advertising cookies described below.
Last updated 31 October 2026
Nothing leaves your device. The prices, costs and rates you enter are processed in your browser by JavaScript and are never transmitted to this site or to any third party. There is no account, no saved history and no server-side record of your numbers. Closing the tab discards them.
Like any website, requests to this site pass through a hosting provider that keeps standard server logs. These may include your IP address, browser type and version, the page requested, the time of the request and the referring page. These logs are used to keep the site running and to diagnose faults. They are not used to identify individual visitors.
This site does not set its own tracking cookies.
Third parties whose services appear on these pages may set cookies. That includes the advertising network described below and, in some cases, the provider that serves the site's fonts or scripts. You can block or delete cookies in your browser settings; the calculator will continue to work, because it does not depend on them.
This site is supported by display advertising. Third-party vendors, including Google, use cookies to serve ads based on your prior visits to this and other websites.
We do not control third-party cookies and cannot read them. Their handling of data is governed by their own privacy policies.
Traffic is measured with Cloudflare Web Analytics, which reports aggregate page views and referrers without setting cookies and without building a profile of individual visitors. No cross-site tracking is involved.
Pages here link to external sites, including official platform documentation. Once you follow a link you are on someone else's site and their privacy policy applies, not this one.
This site is intended for adults selling goods online. It is not directed at children under 13 and does not knowingly collect information from them. No personal information is collected from any visitor through the calculator.
Because this site does not collect personal information through its own systems, there is generally nothing held to access, correct or delete. For data held by advertising or hosting providers, use the opt-out links above or contact those providers directly. If you are in the European Economic Area, the United Kingdom, California or another jurisdiction with data protection legislation, you retain the rights that legislation grants you.
If the way this site handles data changes — for example if analytics or advertising providers are added or replaced — this page will be updated and the date at the top will change. There is no mailing list, so changes are only announced here.
Questions about this policy, or a correction to a fee figure elsewhere on the site: contact@sellersfees.com.