Terms of use

Updated October 28, 2026

SellerTools Hub is operated by tivonra and is intended for users worldwide at https://tivonra.com. It provides free calculators and educational guides to help you explore selling costs, pricing and shipping assumptions. The scope and limitations below describe the service.

Estimates for planning

Results estimate the scenario you enter under the assumptions displayed by each tool. They are not accounting records, professional financial or tax advice, marketplace invoices, binding shipping quotes or a guarantee of earnings. A profitable calculation does not establish customer demand, listing eligibility or permission to sell a design.

Review your inputs and applicable rules

You are responsible for checking your costs, fee setup, carrier service, account agreement and final selling price. Presets cover a stated scope and cannot represent every country, plan, payment method, tax rule, discount, refund, surcharge or special case. Check the source links, applicable dates and your actual account records before acting on an estimate.

Examples are hypothetical. Displayed amounts may be rounded; calculations can retain more precision internally. Do not use a rounded example as a substitute for the underlying rules or your own reconciliation.

Availability and accuracy

We aim to make the assumptions clear and the arithmetic useful. Source policies and service terms can change, and errors are possible. The tools are provided as available, without a promise of uninterrupted access or fitness for every business decision. You should independently verify material decisions. Nothing here excludes rights or protections that applicable law does not allow to be excluded.

Independent content and external links

SellerTools Hub is independent of Etsy, Shopify and the carriers named on the site. Their trademarks belong to their respective owners. External websites have their own terms and privacy practices; linking to a source does not give us control over that website.

Your entries and exports

You retain responsibility for the information you enter and the results you copy, download or share. Do not submit confidential details through the public tool search. See the privacy policy for how worksheet values and page requests are handled.

Changes and questions

Tools, supported assumptions and these terms may be updated. This version has no paid services or active commercial partners. For questions, contact [email protected]. The public site is hosted on Cloudflare Pages. Material changes to the service will be reflected in these terms and the privacy policy.

See our about page and affiliate disclosure for more context.