After the The Tomb of Raithwall, you may find yourself in a bit of gil trouble setting up your characters. Get Thief's Cuffs and Dragoon's Monograph. Golden Amulets for the characters not in play is a good investment as well.

Head to Dalmasca Westerland and go to the section called The Western Divide and go into the Ogir-Yensa Sandsea. Stay in the section "Platform East Tanks" because your targets are Alraune's. With the Thiefs Cuffs you're able to steal Succulent Fruits (300g) and Maces (900g). The Monograph in place will make Alraunes drop up to 1-3 Succulent Fruits!

The important thing to remember is you must be able to chain Alraunes to get better drops! The best way to do this is to dive into the next section and grab the 2 Alraunes on the first platform, then go down the stairs and up the left platform for another 2. Last 2-3 in this area is tricky, head north to the M-pathed platform for 2-3 more Alraunes, just make sure not to kill any other creature that may break the chain. By the time you're finishing up these 6 you can go back to "Platform East Tanks" and clear the respawned mobs. Simply head back to the crystal and out the next screen to respawn everything and do it again!

Doing this I was able to make 100,000 gil an hour. Happy hunting!