State fee is 265 € now in Estonia. But the tax system is cool [1] and admin is a breeze (if your passport colour is right and you can get e-residency – not a problem for any EU/EEA citizen, obviously).

[1]: https://news.ycombinator.com/item?id=48660856

Worth noting is that there was 2500 € capital requirement until 1st of July 2019 and it was reduced to 0 €.

Public limited liability company (Oyj) still has 80 000€ capital requirement.

Here in Portugal the legal requirement is 1€ for an LLC (lda) and it took me a few hundred euros in fees only, all in morning to take care of everything.