Tax/Import duty is not included in the item price or shipping charge. 

International online purchases are to be taxed in most countries.  Tax including import duty, along with customs release fees/brokerage fees/relevant fees, may be collected at the time of purchase and/or delivery. 

Tax/duty/any fees incurred from the purchase and delivery are the buyer's responsibility. 

For questions and quotation, contact customs in your country or region.