The prices on this site are excluding VAT (Value Added Tax). Whether VAT will be added to the invoice, depends on your location:
The Netherlands
For products delivered within the Netherlands, 21% BTW is added to the invoice.
European Union
Products delivered within the European Union can be invoiced tax free if you provide us with your organization’s VAT number.
This is called reverse charge or intra community supply (ICS) in article 138(1) of the EU VAT directive.
Outside the European Union
Products delivered in the rest of the world (Americas, Australia, Asia) are invoiced tax free.
Depending on your local tax regulations, you might still be required to report the purchase, pay import duties and/or taxes. Consult with your tax office or accountant if you are not sure about this.