Terms of Use
By using this tool you agree to these terms. If you do not agree, please do not use it.
1. What this tool is
A free, client-side web app that compares illustrative sample prices for Costco and Amazon using unit-price math, and lets you add your own price entries. It is an informational tool only — not shopping advice, and not a store.
2. Provided as-is; no warranty
The tool is provided as-is, without warranty of any kind, express or implied. In particular: no warranty on price accuracy or completeness. The built-in dataset contains illustrative sample prices that are fictional, not live, and not current. We do not guarantee that any price shown is accurate, complete, or up to date.
3. Your responsibilities
- You are solely responsible for the accuracy of any prices you enter via the add-item form or CSV import, and for verifying all prices with the retailer before making any purchase.
- Items you add are stored only in your browser's localStorage. Your data never leaves your device, so we cannot see, share, or be responsible for it.
4. Acceptable use
- You must not use the tool in ways that violate third-party terms of service or the law — for example, do not feed the tool price data scraped from retailer websites in violation of those sites' terms, and do not use the tool for any unlawful purpose.
- Data-source connector (BYOK). The optional data-source feature is a generic viewer for JSON endpoints you configure yourself. Only connect APIs and data sources you have lawful access to and whose terms permit this use; you are responsible for complying with your API provider's terms and for safeguarding your API keys (use only keys you own or are authorized to use). We provide no integrations aimed at scraping Amazon, Costco, or any specific retailer, and nothing in this tool authorizes circumventing any site's terms or technical protections.
- Personal, non-commercial use. This tool is for your personal, non-commercial use. You may not resell it, bundle it into a commercial product, or present it as your own service.
5. Intellectual property
The app's code is released under the MIT License. "Costco" and "Amazon" are trademarks of their respective owners and are used here only in plain text to factually describe a price comparison (nominative fair use). Product names are short factual identifiers; all descriptions are original.
6. Limitation of liability
To the maximum extent permitted by law, the authors and contributors shall not be liable for any direct, indirect, incidental, special, consequential, or exemplary damages arising from your use of (or inability to use) this tool — including, without limitation, any purchasing decisions made based on sample or user-entered prices.
7. Changes
We may update these terms; the current version will always be posted here with its date. Continued use after changes means you accept them.
8. Contact
Questions about these terms: open an issue on the project repository, or write to legal-contact@example.invalid (TODO: the repo owner must replace this placeholder with a real contact address before public launch).