Shipping is calculated differently for each order and country it is being shipped to.
We generalise it by saying that it is a percentage of the cost of your order in total.
Attached is a sheet that highlights the majority of the countries we deliver to and their estimated shipping percentages.
For example:
You want to place an order and ship it to Portugal. Portugal shipping percentage is 16%
Your order total comes to £100
Shipping estimate is £16
Full amount to pay is £116+VAT