I've got 4 dolls from Rube.
But that was before they changed Rube again... So now they're much much rare!
But at the time i've got the dolls it was in exchange of grand ol grinders, still and EHSP.
Whether this was before or after the Rube was changed might make a world of difference. Before the change, I traded I think usually for grand 'ol grinders (and maybe some super scrapers). After--haven't gotten a single doll, so don't know.