"Ok, this is only for level 50+ characters. It is quite simple. First off, go and buy about 6 Stacks of Rolanberries, it will only set you back maybe a few thousand. Go Into Crawler's Nest, and keep walking straight untill you reach the first room with the big sacks hanging down. You wil see a ??? inside a basket. Trade 1 rolanberry to this ???, keep trading untill no text appears, to your left you will see an NPC Crawler, walk close enough and it will engage and become a fightable monster. Kill this crawler to get a Dated Rolanberry. Get about 50 or 60 of theese, then go to Selbina and trade them to some guy there, I forget which, sorry. But you will get 800 gil per berry, and once you've traded 50 or 60 youll have almost hero fame in every nation =)
You must trade the Berries to Vuntar"
Not sure if you guys had this.