Final answer:
Rad offers a 'more-for-more' value proposition where they charge higher prices, justified by providing higher quality and better service to customers.
Step-by-step explanation:
In the scenario where Rad, a luxury watch manufacturer, charges higher prices than competitors but remains popular due to superior quality and service, it is said to offer a more-for-more value proposition. This means that customers are willing to pay a higher price in exchange for higher quality, better service, and the prestige that comes with owning a luxury product. Rad's business strategy is based on providing additional value that justifies the higher prices as compared to the competition.