Please note that if you choose as international delivery service other than Ebay Global Shipping Program ( calculate import charges upfront ) you may need to pay these import charges,taxes or any other charges that might apply on arrival or collection of the parcel in your country - that's buyer responsibility to cover these cost.
So in simply words:
Ebay Global Shipping Program - you have calculated and paid upfront for figures,delivery and any import charges
Royal Mail International - you pay for the figures and delivery to your country ( import charges are not included in this costs and must be paid later in your country - that's buyers responsibility to cover these costs and you understand and agree with that if you commit to buy and deliver this way )