A new discount that is similar to Mix and match discount (the so-called BOGO offer – Buy One Get One for free). But condition to get the free item is to buy products over a given amount instead of given quantity. For example: - buy items (from a category or a particular item) for 10 USD - get one item (from a category or a particular item) for free, That means for each 10 USD of the total amount of the items specified to get one item for free. Lines can contain either categories or particular products. In Mix and match line groups there should be registered Amount needed instead of Number of products needed. I believe this type of discount is quite common for many companies and I hope it to be included in later updates.