To make sure you selected the right items, you should directly write to
support@aqua-computer.de.
As I see in the shop, there is a option for shipping small items:
International shipping fees outside the European Union:
All countries: Small orders up to a weight of 125 g and a maximum value of € 50.00 can be shipped in a padded envelope for € 5.00 (VAT-exempt) per order.
Shipping Costs