Here's a great technique to make a lot of money in Infinite Undiscovery. After completing the fight at Port Zala, connect with Rucha and buy ingredients from Faina. Buy as much Sliced Fish and Sliced Deviant Fish as you can afford. Then, go into the Creation menu and create the Deviant Fish Platter (which will consume a Sliced Deviant Fish and two Sliced Fish a piece).

After making as many of these dishes as you can, talk to Faina once more and sell them to her for a huge profit. The more you can afford to create, the more money you can make, so try to make as much as possible. You should make 15x more on selling the final product than you spent on the ingredients to make it. Nice!