In WHMCS, you can manage product prices through the admin panel. Here's how you can do it:

1. Log into WHMCS: Access your WHMCS admin panel using your username and password.

2. Navigate to Products/Services: Click on the "Setup" tab in the top navigation menu, then select "Products/Services."

3. Product/Service List: You'll see a list of your existing products or services. Click on the one you want to manage the pricing for.

4. Pricing: In the product/service details view, navigate to the "Pricing" tab.

5. Pricing Options:

   • One Time: Set the initial setup or purchase price for the product/service. This is a one-time fee that the client pays when they first order the product.
   • Recurring: Set the recurring price for the product/service. This is the amount that the client will be billed at regular intervals (e.g., monthly, annually).
   • Free Domain: If applicable, you can specify if the product/service includes a free domain and its registration period.

6. Billing Cycle: Choose the billing cycle for the recurring price (e.g., monthly, quarterly, annually).

7. Setup Fee: Optionally, you can set a setup fee for the product/service. This is an additional one-time fee that is charged when the client orders the product.

8. Save Changes: After configuring the pricing options, click the "Save Changes" button to apply your modifications.

9. Currency Options (Optional): If you offer your services in multiple currencies, you can set different prices for each supported currency.

10. Repeat for Other Products (if needed): If you have multiple products or services, repeat the above steps for each one.

Remember to consider factors like profit margins, competition, and market research when setting your product prices. Additionally, it's a good practice to periodically review and adjust your pricing to stay competitive and ensure profitability.

Always communicate any pricing changes clearly to your clients, and update your website or marketing materials accordingly to avoid any confusion.