[i_don_t_know]

The FAQ says they're Canadian and they ship overseas. But you are responsible for customs, import duties, and local taxes if any should apply.

To get to the FAQ and other information: Scroll all the way to the bottom and click on "Terms".

[abrugsch]

well as long as the actual raw value of the components is listed on the customs declaration, each packet is unlikely to hit the import duty threshold (of the UK. can't speak for other countries)