True, but they would also have to have the rules printed, which is often cheaper to do overseas as well (at least from what I understand hearing from various webcomic people talking about getting books printed)
But it would not surprise me if they had to get things created through multiple companies, and did the final packaging themselves. Maybe that's too much, though? Dunno. Regardless, yes, the rules should be finalized now if not very soon. The delay is... annoying, but I have this odd feeling that GG has a lot on their plate right now, especially with the inevitable delays/errors in the manufacturing processes...