lol, no idea of what to make of it, but I go along with it
forget all the shipping costs, that is the cheapest part, the biggest problem is the amount of people that will get involved in the cargo, and docking in Japan will be more expensive, real estate is more expensive, and travel costs from dock to shops is more expensive, and to top it off, you have to pay all the handlers, and they are more expensive
I hope it helps