I've just been onto the official web site. There's no mention of prize money, but I guess Andy and co. must be on major Wonga to play in the tournament?
It must be one of the factors, along with getting some pre-season training. Being an invitation tournament, there isn't any ranking points on offer, is there?
It's an exhibition, so no prize money or ranking points. However there will be fairly hefty appearance fees, particularly given who's hosting the tournament.
For all intents and purposes it is merely a relaxed warm-up for the new season and a chance to try out some new shots.