The eggs also taste different, much richer and a different color yolk from what I remember.
Oh and they don't need to be refrigerated; and some of them still have chicken poop on them.
Overall I like them much better.
Can't reply in-line to the child post, but this is a cultural difference. In Europe, eggs aren't refrigerated at all, and they're not washed. In the US, eggs are washed and they're sold in chillers. The reasoning behind this: http://www.latimes.com/food/dailydish/la-dd-heres-why-we-nee...
Denmark - European - refrigerated eggs.
See also: Every other discussion about refrigerated eggs on HN.
As far as I know, once refrigerated, always refrigerated. But if your eggs have never been refrigerated there is no need to.
I don't know about non-refrigerated but I would guess they can't be stored as long.