i am fairly new to shipping and have been trying different methods, asking for feedback from buyers and their hatch rates, also i receive eggs and like clucky said, when they are packed fat end up and packed in tightly, i have not received an egg with a loose cell. so i have been trying it. if i have only a few eggs to ship, bubble wrap each all the way around and place inside another container, a cherry tomato plastic container from costco works fab! stuff the empty spots with shredded paper, and pack that sucker firmly in the middle of the shipping box with more paper, bubble wrap, etc. the one that went to clucky here, i used DMrippey's idea, styrafoam lined box, lots of big bubble wrap and individual bubble wrapped eggs facing down packed in tight, no chance of them moving. and away we go!