I have a perverse alternative to buying store eggs during the fall/winter egg drought. A few years ago, I bought a 36 ounce tin of powdered eggs. They are just too, too dreadful to mix up and cook to eat, but it enables me to pull eggs out of the pantry at the drop of a holiday invitation that states I'm welcome as long as I bring a home-baked pumpkin pie.
If one of my aging layers deigns to produce an egg during this time of egg famine, I cook it and wolf it down before any of my egg customers hears about it.
My active layers, by the way, include several six and seven-year olds. The matriarch of the flock is age ten and a half. Her lieutenant is nine and a half. The older one no longer lays, but her sidekick produces occasional shell-less eggs which the other chickens are happy to assist her in getting rid of the evidence.