http://wgt.com/tournaments/details.aspx?ID=3dc529c6-c3c1-4451-a9b8-9c5500f76915
There were 8 drawings total throughout July, August, September & October. It was a $5 entry (per period) for a CTTH and random winners were selected. There were also 4 stroke play tourneys, each sending one winner from the Pro and Master division. All in all, they paid for 16 people to go even though only 12 actually showed up.
I think those are the biggest prize packages WGT has offered, but I'm sure they'll trump it somehow soon enough.