There are all kinds of pitfalls when you start honing for others.
What you will receive are the razors that others cannot get sharp because of either a warped blade, badly nicked edge, uneven wear on the spine, a definite frown shape to the razors edge (that really gets me), pitting along the edge, very loose pins, or a "bread knife dull edge", to name a few.
You better have a full complement of tools and the experience to know how and when to use them. In short, you will not be receiving the cream of the crop. Only someone else's problems. A challenge is fun but it does grow old. Then you start making your own razors!
Make sure that you reserve the right to return the razor because it is in such bad shape.
P.S. Sometimes you will receive a cracked blade.

Off to the workshop I go,