> If I had one euro per each time I heard a clock saying "30 seconds one time" I'd be rich.

Fun diversion. I figure 10 clocks in the room, a generous estimate is that they alert an average of 50 times per player per game, 4 games per day. A very solid day's work, but most weeks you can only attend a tournament on Saturday/Sunday.

I don't think you'd end up rich, but you could probably make a living.