Why is iron pot not as expensive as an iron pot?

Not as expensive as an iron pot, because the mold of the iron pot is more expensive.

Iron pot was called iron pot in the original Japanese tea ceremony. The iron kettle has no hanging beam and spout, and the boiling water should be scooped out with a small bamboo spoon. The die loss in the iron pot is large because the shape and structure of the iron pot are more complicated than that of the iron pot, and the production requires more dies and processes, which makes it more difficult, so the price of the iron pot is not more expensive than that of the iron pot.