http://www.theage.com.au/victoria/man-dropped-from-lottery-syndicate-wi…
There is a legal problem what to do if you the organiser of a lottery syndicate, and someone does not pay that week, and the ticket wins big. Because there is so much money involved, often that someone is willing to go to court.
Here is one such case that went to court recently. I suspect this costed the lottery seller much.