Under the new rules import duties (where applicable) and VAT will become payable on all goods imported from the UK. This payment is additional to the amount paid for the goods and it is the Buyers responsibility to pay this sum.
The rates are set by your country and are payable on the purchase value of the goods, you will be contacted by your local border controls or postal service about this payment. The amount due must be paid before the goods will be released for delivery, if unpaid the goods will either be confiscated and destroyed or returned to the Seller, in either event you will not be entitled to a refund.
Be sure to take these charges into account when ordering goods from beyond your countries borders.