What world? I don't know. I searched and find this website before commenting: http://www.luckyironfish.com/shop , which says It costs $25 each, while you can find $22 iron pan on Amazon.
Sure it might be cheaper in Cambodia, then the price of iron pans would be lower as well.
They didn't just use an ingot, they shaped the ingot into a lucky fish, which also costs money.
Buying new pans is such a stupidly colossal waste of money for low income families. They already have pots and pans, and definitely don't need more. An ingot is something they can easily accommodate. And it probably costs a whole lot lesser than 20 USD.
Who wants to put an ingot in their food? But a lucky fish? We could all use some luck.
And the good thing about a fish rather than a pan is you can put it in your soup pan, your wok, your fry-pan, etc. Try putting your cast-iron pan into your wok!
Sure it might be cheaper in Cambodia, then the price of iron pans would be lower as well.
They didn't just use an ingot, they shaped the ingot into a lucky fish, which also costs money.