1. Check that your login has access to this feature: Access to administration

2. In each of the items, there is the possibility of setting the price c/VAT of purchase and sale, through the "Options" menu in the main Dashboard, in preferences, articles, clicking on "edit" in the desired article.

The software automatically calculates the price c/Iva and s/iva, depending on the value of the VAT you enter. In this way, you will be able to understand the difference between the buy price and the selling price, which will give you the profit margin of a certain product.

The weighted average price is calculated and updated automatically, whenever there are stock entries with a different value from the defined purchase/acquisition price:

Note: the weighted average price, as well as the entry and exit of stock, is only possible when the article is associated with a type of article that has the "money control" active: