Most likely, you've never eaten a turkey egg in your life -- but if you did, you would know that it tastes more or less identical to a chicken's egg, if somewhat creamier. It's also slightly larger than a chicken egg, and more to the point, delivers twice the calories and nutrients; this would theoretically make it a welcome addition to the breakfast table, especially for those who need protein. So why aren't the supermarket aisles lined with turkey eggs in containers, perhaps with a slightly macabre turkey mascot winking at you from the logo? Is there a law against it or something? Nope: turkey eggs just aren't as economical to produce as chicken eggs.
Chickens are practically egg-laying machines: most good egg-producing hens lay around 250 a year, but the number can go up to 300. Turkeys, on the other hand, lay around 100 eggs a year -- which, if you've brushed up on your arithmetic, you may recognize as a lower number than 250. On top of that, chickens start laying eggs earlier than turkeys, and, being much smaller than turkeys, require less food. If you do find some place that sells turkey eggs, don't be surprised if you have to pay a pretty penny: up to $36 for a dozen. (Those soaring chicken egg prices don't seem so bad now, huh?)