We have a terribly large variety of eggs in most places so it depends where you go.
Your standard leghorn eggs, large, in the bottom of the egg section, goes for about 1.99, or even less per dozen if it is some sale or promotional thing...not too long ago food emporium had a free one dozen medium sized eggs if you bought something else promotion too.
Then you have the omega 3 eggs... from which if you just ate the flax seeds yourself you'd get more omega 3 eggs, go for 3.99 per 6! So that makes it almost 8 bucks a dozen for that specialty type egg.
So range is "free with purchase" to 8 a dozen here.