Virtual bundles are created by consumers themselves when they purchase several identical items or different varieties from the same product line to take advantage of a promotion such as “buy one, get one free” or “buy two, get one free.” Unlike physical bundles containing predefined products, virtual bundles are customized by the shopper. At checkout, the system automatically detects the virtual bundle and applies the corresponding promotion. This approach allows retailers and manufacturers to avoid pre-assembled packaging, but it can raise concerns among consumers about whether the benefits are being properly applied at the checkout. Virtual bundles are generally distinct from pre-established bundles in stores. For example, a promotional offer highlighting virtual bundles might consist of: [specific example of a promotional offer].