Tax (VAT), Duty, Fees
Expect additional payments if your country have some laws which require them. I do not collect tax (VAT), which means you're liable for paying them upon receiving the parcel.
As for the EU, the VAT is usually around 20%. Add duty and fees and you will get a rough estimation of additional payments.
When using Express shipping - they may charge additional customs clearance (around $15). So parcel to, let's say Germany or Canada will have around $40 of additional payments if you buy the product which costs around $80. Better to stick to a Standard shipping.