Shipping vs. buying weights?

Moving from America in a couple months. I have a few kettlebells between 40 to 80 pounds, totaling about 400 pounds total. I've heard services like pirateship mentioned here before. Is there an economic way to ship these over to Tokyo, or better to just pick them up in Japan?

FWIW these are (what I consider to be) fairly nice Rogue competition KBs that I've picked up over the years.

Thanks in advance!

by spagyeet