http://www.poultryhelp.com/eggpacking.html
This web site can tell you how to package them. It cost $28.00 per pound to overnight them from your zip to mine. You will be given a form at the Post Office to fill out stating that are live eggs enclosed.
Good packing idea for smaller eggs, but I've used jumbo egg cartons before, and they will not even come close to closing with pea eggs in them, I had to tape them with a 1 inch gap along the side because it wouldn't close anymore than that. Same principal as my foam wrapping though. They will not move against each other and the whole bundle will not move within the box. Overnight shipping of 6 well packed pea eggs, would IMO be anywhere from $25.00 to $35.00, last year I shipped 6 to OH 1 state away and it was $25. Plus you have to buy packing supplies.