And one good info for shipping cost. I use usually Postpaket International. This takes 10-12 days to arrive in Japan, but is much cheaper.
As a sample I just selected 5 kg to New Zealand. It costs only 37 EURO compared to 315 EURO for FedEx, which of course is much faster with 2-3 days.
Postpaket International is sent through their local post office.
Here you can 'play' some weights / price calculations.
http://www.posttip.de/besttarif.asp?...o2.x=8&go2.y=5