It's the same in my country. In order for the shipment to pass through customs, you must present proof of order or payment.In my country regardless of this they inspect how much you paid be it crypto or bank transfer or any other payment method so they can tax you.
They have figured out that the Chinese declare lower value for the packages.
Sometimes you can get the courier to do the taxing and it might be less risky but still its a hassle.
Other countries could be more soft on taxing but RO is a bitch.
