I agree Retro, I am keen as well.
Got a short email back from Charlie - he is concentrating on making a good pin first and then will worry about the 240v 50hz power issue. But he is making the games to be RHOS compliant for overseas shipping which is good.
We actually don't need RoHS compliance for Australia (well, not yet anyway). That's a European thing and is actually proving to be a lot of WANK!
I think the 220V issue will not be a problem at all - I doubt they would go down the route of "protecting" the game boards by locking them to 50Hz - that's pretty dumb (and especially dumb of Stern IMO) especially seeing how a 12yo electronics enthusiast can get around this.
I would buy this machine based on what I have seen already......