Stop it. Just stop it! Child labor laws exist outside and above the discussion you're
trying to have. You're being deliberately obtuse, and it's getting quite silly.
Selling public domain texts is perfectly legal SO LONG AS YOU'RE NOT BREAKING ANY OTHER EXISTING LAWS IN THE PROCESS! I can't believe something as fricking obvious as that would need to be stipulated, but there it is.
So in parting, you're right... I'm NOT allowed to re-sell public domain text that I've handwritten using ink made from the blood of innocent children I've murdered. I concede the point. Happy now?