If you are an EU citizen, there are no customs duties and import taxes to be paid when buying a lot coming from within the EU. Please check the list of EU countries and the European regulations here.
Orders shipped from outside of the EU may be subject to customs duties, import taxes and fees levied by the buyer country, levied once a shipment reaches the recipient's country. Such additional charges must be fulfilled by the buyer. Catawiki has no control over these charges, nor can predict what they may be.
If you are buying your lot from a non-European country, you can read about the rules and procedure here.
Sellers are not responsible for any additional customs charges or fees once their package has left their country. If you are unfamiliar with customs fees and charges, please speak to your local postal or customs office for more information.
Be aware that you cannot receive your lot until customs charges are paid. If for any reason customs fees are not paid, your package will return to the seller. If the seller agrees to ship the lot back to you, you will need to pay the customs charges and for the return shipping costs.