Cast iron products are more expensive than modern pots and pans. Other metal cookware such as non–stick, and aluminum is usually cheaper than cast iron. The prices depend on the brands.
Cast iron cookware is expensive because the raw material cost is high. Besides it, the effort needed in manufacturing and maintaining it is high compared to any other cookware. As a result, their shelf life is longer. Cast iron products are worth it because of their functionality, versatility, and durability.