Large Rolling Luggage Whats The Best Way To Ship Heavy Luggage's To Korea?

Whats the best way to ship heavy luggage's to korea? - large rolling luggage

I have two large suitcases rolling thats 2 meters tall each, and I must send them to Korea. They are very difficult for the transport of DHL is beyond question. Because it costs about $ 700-1000. Is there a better way? maybe in a boat? If so, use the recommendations of the society?