How is the bundle discount applied versus buying items separately?

A bundle carries a bundle discount (a BundleDiscountAmount) that makes buying the bundle cheaper than purchasing its components individually. The storefront can therefore present the bundle as a saving ("buy together and save"), which is the commercial point of bundling — encouraging larger baskets by rewarding the combined purchase. The discount is a property of the bundle product,…

A bundle carries a bundle discount (a BundleDiscountAmount) that makes buying the bundle cheaper than purchasing its components individually. The storefront can therefore present the bundle as a saving ("buy together and save"), which is the commercial point of bundling — encouraging larger baskets by rewarding the combined purchase. The discount is a property of the bundle product, applied when the bundle is bought, as opposed to the component prices a customer would pay buying each item on its own.