I'm dealing with the same problem at the moment, but I am going from Zurich (and Holland) to Sydney, Australia.
I've noticed, that if it isn't much and you can pack it in packages up to 20 kilo, the normal post (
Die Post - Home) isn't a bad option. it is 178 for 20 kilo's + some extra costs for insurance.
also with the flight you are taking, which airline are you going with? and in case you are flying business, with BA, you can take for example 3x 23 kilo pp. klm gives you 30% discount on bying extra bagage space when you do this beforehand.
Nicolien