powdered eggs are readily available and work very well in baking.  I don't know if I would ever consider going to the bother of dehydrating eggs.

We take fresh eggs for the first few days, but if I am going to bake, I usually just mix the powdered eggs in with whatever I plan to bake at home when I am getting my ingredients into a Zip-lock bag.  Then add a bit more liquid when mixing up my batter/dough.