1. Purpose

These terms govern the use of the lecture material sales service provided by Gujo Lecture Store (the “store”).

2. License

Purchased materials may be used under the license terms stated on the product page. Resale and redistribution are prohibited.

3. Updates

Materials on sale are revised and republished as content is updated. Buyers get the latest version at no extra cost.

4. Payment

Payments are processed at the Gujo checkout (hosted); the store does not store card details.

5. Limitation of liability

To the extent permitted by law, the store is not liable for indirect damages.

Effective: 2026-09-03