At Monday I was day off and packed up clothes, books and a bike for sending them to Seattle. The next day two people from Hyundai Shipping took them. The Hyundai Shipping is the largest shipping company in Korea. There are lots of shipping companies but many of them are infamous for asking additional charge or breaking due date. Comparing those companies I thought Hyundai Shipping is better and choose it. But rate isn't chip enough.
Standard 3cbm costs 1,350,000Won (about $1350). 250,000Won (about $250) is charged each additional 1cbm.