It is prohibited to do so, since problems can arise when passing customs:
• the parcel can be sent back without compensation for the cost of delivery;
• the parcel can be confiscated;
• you will be asked to prove the value of the goods by providing invoices and bank statements ;
• you will have to pay a customs fee that will be calculated by the customs services themselves by assessing the goods if you cannot prove that you bought them at the prices specified in the declaration.