The Price A, Price B and Price C user groups exist so that alternative prices for each product can be entered for these user groups.

For each product you can enter the price per quantity unit. This price is shown at the product (e.g. 1,43 EUR per Liter).

You can set up scale prices for each product. When a certain quantity of a product is purchased, the product has a lower price.

You can set up scale prices under Administer Products -> Products on the Stock tab. There, you will find entry fields for scale prices on the right: