Postage and packaging only amount to 17.90 € per package within the European Union. Regardless of how big and heavy the package is. Transport insurance up to 500 € and tracking number are included! Small packages of up to 1kg can also be sent by airmail for 12 € (in a stable cardboard box however).
Shipping costs for packages outside of the European Union amount to 17 € for small packages of up to 1kg, and for everything above that 39 € all inclusive. Needless to say, insurance and secure packaging for shipping is included here.