What with customs? Can they charge me extra costs?

If you are an EU resident, you don't have to worry about any of that. 

Our warehouse is based in Belgium, so all goods are shipped from within the European Union. 
All prices shown on the website are VAT inclusive and there will be no further import or customs duties if you live within the European Union. 

If you are outside the EU (for example Switzerland), then the situation is different. 

Prices of items and shipping costs will be shown VAT exclusive in that case. 
International customers are responsible for any customs duties, taxes or fees payable that may arise, as this is not part of the shipping and handling fee paid when you make your purchase. Please check with your local postal services for full details on thresholds. 

Please note: As a registered business we are unable to ship international orders as a ‘gift’ or declare it at a different value to what you paid.