We follow the EU rules on that, as far as I know. And oh certainly, it is far from perfect; practically all animal products produced in big scale, are unethical, and I would not trust the organic labeling on plant products. But if you are going to buy eggs, even the EU bio criteria are significantly better, than having the chickens locked in tiny cages for their lives, or kept in huge indoor halls. The criteria, for example, also includes 4sq.m of outside space per chicken, and that they get to spend 1/3 their lives outside, whenever possible. Here the outdoor season is from May to October, I do not know does that differ in other EU countries. Is that great? No. But it is better, than the alternative requirements.

That is good to know, too!

Oh, that is good to know. Here organic includes the highest standards for chicken wellfare, since they have to be let out etc., compared to just freerange that has tiny floorspace requirements, inside.

Dozen is likely just technically easier, since if you split it in half, you get 6, but if you split 10 half, you get 5. And only 5 is harder to package. I’ve seen 4 eggs sold as well, but 6 and 12 are probably close enough, around the numbers people reasonably need.

You should always buy the organic ones, even if they are so much more expensive. The conditions in which the chickens are kept, to produce the cheap eggs, is absolutely, inhumanely fucked up. You can see the difference in the yolk as well: the ones produced by chickens, that are fed better, and not kept in a way they cannot even move, are orange, while the ones by chickens kept and fed horribly, are yellow.