Grouped, Configurable, and Bundle products have in common that they comprise a combination of other products. A Grouped product is displayed in the frontend as a product page where your customers can choose to order multiple individual products in different quantities, in one go. For example, the Magento Red Furniture Set from Magento's sample data displays an order form where quantities for three different products can be filled in. These three products exist as individual products in the store; the Grouped product is a way to present them together. A Grouped product is useful for showing your customers which products go together well: