Fixed prices or not, Nintendo will have likely have something to say about it nevertheless, right? 350€ would be way too fucking much.
We are used to get everything overpriced since $ are just exchanged with a € sign. But $300 transfer to roughly 280€. It would be insanely unfair to push the price up to 350€ from that.
edit: ^That tax thing makes it sound logical, still way too much to be successful.