This Prices button allows you to configure pricing so that the selected customer can receive a special cost price and/or special selling price.
1. Click Customer List on the top toolbar:
2. Select the Account Details tab.
3. Press Edit to make changes to the customer record.
4. Press the Prices button.
5. Click Add to add a new product.
6. Use the product details screen to search for a product and click Select Product.
7. A new row is added showing product code, description, manufacturer and price.
8. The Selling Price column shows the normal selling price and cost price. Over type the price with a new price. You can alter either the cost or the selling price, or both.
9. Tick the Use box.
10. Repeat as needed.
11. Click 
Update to save and close.
IMPORTANT - Discount hierarchy
If you need to specify more than 1 type of discount you need to know the order in which they are applied. There is a hierarchy where one discount overrides the other.
The order goes from least specific to most specific:
• Product Discount
• Discount Band
• Catalogue Discount
• Product Prices