Great question — answering as the UphillTech team:
I suggest you find a local farm or a CSA. Occasionally, my farmer will say, "These eggs are warm because we gathered them this morning." It doesn't get fresher than that.
Full answer by michael: https://cooking.stackexchange.com/a/18025 (CC BY-SA 3.0).
Need it done for your business? UphillTech.