You can manually add prices to products and SKUs by updating either your catalog or the price group itself.
To add prices to individual items in your catalog, display the details page for a product and click the Price Groups tab. See Create and edit products for information about adding prices to a product or SKU.
To add prices to the price group, display the details page for a price group and click the Products link. A list of all products and SKUs in your catalog appears. You can add or change the list price, sale price, or shipping surcharge for products or SKUs in the list. See Activate price groups for information about displaying a price group’s details.