Shipping costs are based on the shipping method you choose and the value of your order. International shipping is priced based on how much it costs the carrier and shipper to get it to you. Costs include fuel, maintenance of equipment, hiring 3rd party carriers for legs of the journey, employee salaries, etc...
When ordering from ANOVOS the parcel carriers are most likely sending your shipment by air. The costs to fly cargo overseas are much higher than driving a truck within a country.
Shipping costs DO NOT include customs fees, brokerage, or any taxes – those are charged separately for international locales by the appropriate agency.