1. About These Terms

These Terms establish the rights and responsibilities of Calculus Publications and users of our website.

If you do not agree with these Terms, please do not use our website or services.

2. Eligibility

You must provide accurate information when placing an order or creating an account.

Where a customer is under the applicable legal age to enter into a contract, a parent, guardian or authorised adult should make the purchase on their behalf.

3. Products and Descriptions

We make reasonable efforts to ensure that product descriptions, prices, images and other information displayed on our website are accurate.

However, minor differences may occur between website images and physical products, including differences arising from photography, screen settings, printing and production.

We reserve the right to correct errors, update product information and modify product availability without prior notice.

4. Prices

Prices displayed on the website are subject to change.

Unless otherwise stated, applicable delivery charges, taxes, duties or other fees may be added to the purchase price.

The total amount payable will be displayed or communicated before order completion where the applicable system permits.

5. Orders

Placing an order constitutes a request to purchase the selected products.

An order is considered accepted when Calculus Publications confirms or processes the order, subject to product availability and successful payment.

We reserve the right to decline, cancel or limit an order where:

• The product is unavailable
• Payment cannot be verified
• Incorrect information has been supplied
• There is a suspected fraudulent transaction
• An obvious pricing or listing error has occurred
• Delivery to the requested destination is unavailable
• Other legitimate operational circumstances require cancellation

Where an order is cancelled after payment has been received, any eligible refund will be handled in accordance with our Refund Policy.

6. Payment

Customers are responsible for providing accurate payment and billing information.

Payment must be successfully completed through the payment methods made available by Calculus Publications.

We do not request customers to disclose passwords, PINs, OTPs or other confidential banking credentials to our staff.

7. Intellectual Property

All content on the Calculus Publications website, including but not limited to:

• Book titles
• Text
• Images
• Illustrations
• Logos
• Trademarks
• Graphics
• Website design
• Promotional materials
• Digital publications

is owned by or licensed to Calculus Publications and is protected by applicable intellectual-property laws.

Unless expressly authorised in writing, customers may not reproduce, distribute, modify, publish, sell, commercially exploit or create derivative works from our copyrighted materials.

8. Digital Products

Where digital products are sold, the customer receives a limited, non-exclusive, non-transferable licence for personal or otherwise authorised use.

Unauthorised copying, file sharing, uploading, resale, public distribution or commercial exploitation is prohibited.

9. User Conduct

You agree not to:

• Use the website for unlawful purposes
• Attempt to gain unauthorised access to our systems
• Interfere with website operations
• Submit fraudulent orders
• Upload malicious software
• Misrepresent your identity
• Violate intellectual-property rights
• Use our content for unauthorised commercial purposes

10. Third-Party Services

Our website may contain links to or integrate with third-party services, including payment processors, delivery companies and other service providers.

We are not responsible for the independent policies, availability or actions of third-party services.

Customers should review the applicable third-party terms where necessary.

11. Website Availability

We endeavour to keep our website available and functional. However, uninterrupted availability cannot be guaranteed.

The website may occasionally be unavailable because of maintenance, upgrades, technical problems, security issues, internet disruptions or circumstances beyond our reasonable control.

12. Limitation of Liability

To the extent permitted by applicable law, Calculus Publications shall not be responsible for losses arising from circumstances beyond our reasonable control, including delivery delays caused by third-party carriers, internet failures, payment-provider interruptions or force majeure events.

Nothing in these Terms excludes or limits liability where such exclusion or limitation is prohibited by law.

13. Privacy

We may collect and process personal information necessary to provide our products and services.

Our handling of personal information should be read together with our Privacy Policy, where published.

14. Changes to These Terms

We may update these Terms from time to time to reflect changes in our services, business practices or applicable legal requirements.

Updated Terms will be published on this website with the revised effective date.

15. Governing Law

These Terms shall be interpreted in accordance with the applicable laws of the Republic of Ghana, subject to any mandatory legal rights available to customers.

16. Contact Us

For questions concerning these Terms, orders or our services, please contact Calculus Publications through the official contact information provided on our website.