Hi Fritz77, Welcome to T'ville!
JLJ is right, the seller is probably the best person to ask directly. There may be different regulations for different countries - or differences in how a general EU policy is applied - and the seller who ships internationally would be most likely to have experience with all of that.
Then again, it is also worthwhile to ask more than one seller, because they may have a different take on it. I know in buying other materials from the US, I encountered suppliers who really imposed a lot of penalties on international orders. Some others were happy to do business and made it as easy as you please. It may be the same for seeds.
Hopefully we may hear from some of our other EU members about their experiences as well!