If you don't want a cockeral, don't get one. The hens will be quite happy without, one will become the boss hen and lead the others about, marshalling the flock as would a cock if there was one. No hen will get bare patches and scratches from the cock's attentions, you won't get any unexpected / unwanted hatchings (and the resultant cock birds to identify and dispose of, or if you don't do that, gang rapes and worse to deal with.)
If you would like a cockeral, don't worry about the eggs being fertile, you're eating your own eggs so fresh it really makes no difference.
I don't know if there's any legislation about selling fertile eggs for eating though - but someone here will!