FedEx and couriers handling EMS packages may charge you a clearance / administration fees for processing your order through the customs office, and it is your responsibility to complete the payment in order to receive it.

Clearance fees depends on each country so you need to contact the couriers / post office directly to find out the fees for for your country. However here are some examples that we know of.

Shipping Method Country Approx. Fee
FedEx Europe 10 EUR
EMS UK 13.5 GBP
Airmail UK 8 GBP

Chronopost handles EMS in many European countries, while the post office handles Air Mail and SAL.