Yes, I think great just for trying. I saw a post somewhere on the forums for a link to a company that sold old watch parts in batches of 100 pieces or so for not very much money. Maybe you could find that and pick up a bunch of watch parts to keep going and get the watch pens to the same level as the rest of your work, which is beautiful.
I've seen some of barry gross's watch pens on the web. He gets hundreds of dollars for them, or at least ask that much.