[ars]

It sounds funny, but they didn't really "mail" them as you think of the word. Rather they traveled in the company of a trusted adult who happened to work for the post office.

[wileydragonfly]

How much? I need someone to tend my looms.

[bcoates]

You'll want to save money by shopping in bulk:

https://en.m.wikipedia.org/wiki/Orphan_Train