I went through a minor egg shortage last week, and had to resort to buying a 6 pack of store bought eggs -- still "cage free" (or so they say), but my idea of cage free and their idea of cage free are probably a little bit different.
I've got eggs again, but I had 1 store bought egg still to use. One of the eggs in this picture is store bought, and the other came from farm chickens. Bet you can guess which one is the fresh egg.
(ps, I cracked them with the same force. I cracked 7 more farm fresh eggs after this picture and not-a-one of them broke like the store egg did)