All orders from Holzweiler are shipped DDP (Delivered Duty Paid)*. This means that the cost of customs/tax is included in the price you see during checkout.
You will not receive any additional customs or tax after you've placed your order. *This does not apply to orders placed in Switzerland. You will not be charged with EU-VAT during checkout but will have to pay import-taxes to the carrier for the package to be delivered. Read more about DDP and how it affects your shipment Here
However, DHL might need some help from you (as an importer) to clear the shipment through customs. This is just standard procedure, and DHL will in most cases contact you to process the order. Are you having trouble with DHL and customs processing?