Originally Posted by
Loony BoB
That is honestly the fastest way to make cash for now, purely due to the amount of cash you get for a Platinum Ingot. As you get people's primary weapons, you can obviously improve your speed at killing them as you go along. But yeah, just keep doing the death trick until you can get to the stage that you can take out the legs of an Adamantoise quickly and then beat him to death. That way you don't need to store up TP between fights.
If I were you, though, I would focus on maxing out your other stats in all roles, it will make the gil-hunting easier. You could alternatively continue with the death spell and, if you have the egg, you will get quick CP out of it, too.