I'm guessing similar to last year?
I think it's (can't be sure so don't hold me to this) . . .
1st in each division gets $1500 scholarship, 2 Booster boxes of Heart Gold Soul Silver Unleashed, a paid trip to Hawaii for you and a parent. (If you're 18 or over then just the ticket for yourself) and maybe some extra prizes, and an invite to Worlds.
2nd gets $1000 scholarship, 2 Booster Boxes of Heart Gold Soul Silver Unleashed, maybe some extra prizes, and an invite to Worlds.
3rd and 4th get an invite to Worlds, and I think 2 Booster Boxes of Heart Gold Soul Silver unleashed. (If not 1)
16th - 9th gets half a Booster Box.
And top 4 all get trophys with Garchomp on.
That's what it was last year, have no idea what 8th - 5th gets I'd imagine a box each but not too sure on that.