Final answer:
Competitive pricing is the basis for determining the fair value in international dumping.
Step-by-step explanation:
In the context of international dumping, economists argue that the 'fair value' should be based on competitive pricing. Competitive pricing takes into account factors such as supply and demand, as well as the prices set by other companies in the market. It ensures that the price of the dumped product is in line with market conditions and prevents unfair competition.