Final answer:
Retailers offering delivery, installation, or assembly services at an additional cost are providing 'value-added options.' Amazon's efficient production and cost structure allow for competitive pricing, including these options. Bundling, warranties, and service contracts are related strategies that add value for consumers.
Step-by-step explanation:
When retailers deliver and/or install or assemble products, they might offer these either for free or at an additional cost. Among various terms that may be used, these are most accurately referred to as value-added options. Retail giants like Amazon have leveraged their efficient production model and cost structure to provide such options while keeping prices competitive, even including shipping costs. Bundling is another strategy where multiple products or services are sold as a package, often at a discounted rate compared to purchasing them individually. Additionally, warranties and service contracts are often available, particularly for large purchases like cars or appliances. These service customization strategies not only enhance customer satisfaction but also contribute to the retailer's success by increasing perceived value.