This picture shows an individual product being edited in your site's catalog. For each customer group you create you will get a new field to enter a price. As seen above the Retail price is 299.99 In the empty boxes below you can enter the lower Wholesale price and below that the much lower Volume Purchase Agreement price. When you create your own groups their names will be listed here - Wholesale and Volume Purchase Agreement are only examples. The prices defined here are the prices people will see when logged in as members of their respective groups.