Privacy policy.
Effective October 11, 2026
Your calculation stays in your browser
Calculator amounts, costs and selections are processed on your device. We do not upload them to an application database, request your eBay credentials or connect to your seller account.
Local storage is optional
Remember inputs on this device is off by default. If enabled, the browser stores the entered calculator fields so they can be restored on a later visit. Anyone with access to that browser profile may be able to see them.
Use Clear saved inputs to remove this record. Turning off Remember inputs also removes it. Reset replaces the on-screen inputs; if saving is enabled, the reset values replace the saved values. No saved scenarios are publicly shared or indexed.
Hosting and technical logs
The site is hosted by Cloudflare. Delivering pages can involve technical data such as IP address, requested URL, user agent, security events and request timing, subject to the hosting provider’s practices. Calculator amounts are not placed in URLs or server requests by this application.
Analytics and advertising
We use Google Analytics 4 to measure page visits and calculator actions, such as starting an estimate, comparing advertising scenarios and copying a summary. Only the action name and calculator mode are sent for these actions. We do not send calculator amounts, costs, categories, form contents, email addresses or order information. Page URLs are sent without query strings or fragments. Google Analytics receives technical information about your browser and device and may set first-party analytics cookies.
Advertising personalization and Google Signals are disabled. We do not use advertising scripts. We honor Global Privacy Control, Do Not Track and your saved analytics preference before loading Google Analytics. See Google’s privacy policy.
Feedback
The contact form prepares a report on your device for copying or downloading. Where an email option is available, it opens your mail app and does not send automatically. Any email you choose to send will contain the information you include and your sender address. Do not include private buyer, order or account data.
External links
Links to eBay and other external sources take you to services with their own privacy policies. We do not control those services.
Questions and changes
Use the contact page for questions. Material changes will be reflected in this policy’s effective date and, where appropriate, the update log.