Just remember you also get charged tax on the shipping cost as well, then VAT is added and you'll have to pay the shipping company at this end to process it through customs on your behalf...
I used to allow 23% on top of the total cost (item + shipping) to cover this but with the increase in VAT perhaps 27-30%(?) should cover all costs. So worth comparing the total with the
The Flash Centre in the UK or
Photo Specialist based in the Netherlands.
Paul