This year's grand prize of gil has changed, however, from a flat rate prize to a percentage of the proceeds generated from marble sales. For example, rank 1's gil prize will be half of the proceeds from marble sales divided equally amongst all of the people who won the grand prize and chose gil as their payout.
Otherwise, the contest has remained pretty much as is, with items like the Kraken Club and Novio Earring making appearances once again on the grand prize list. Even if you don't match all six digits, there are still plenty of lucrative prizes to leap at, making purchasing marbles totally worth it.
Marbles are 2000 gil a pick and can be purchased from Bonanza Moogles stationed at all of the ports of the capital cities and the Chocobo Circuit.