Yes, some extra costs may occur. Those are not shipping costs, though. Total shipping costs are paid by the sender while sending the parcel. Costs related to customs duty may be issued by the Customs officer if there is such a necessity. Click HERE (link do karex http://www.karex.info.pl/index.php?s=14&m=5) learn about custom and duty fees in Czestochowa – Karex
Also, volume/nonstandard parcels to be picked up by the recipient in our warehouse in Częstowchowa are issued extra unloading/loading fees. Recipient or the person authorized to pick up the parcel can cover the fees while picking up the parcel.