I found this very interesting and informative read on GameFAQ's, which made me very excited to level to around 50. With this strat you can make about 200,000 gil in a matter of half an hour (even less if you are higher level).
Here you are:
Alright, I posted this before, but it got deleted with all the new topics come flooding in. I'm posting it here again, and am gonna bump it every so often so it doesn't get deleted.
Requirement:
Lente's Tear. You need this so you can enter through the magic barriers in the Golmore Jungle.
Head south in the Golmore Jungle until you get into Feywood. Once you get into Feywood, you will be in " The Feywood / Walk of Flitting Rifts ". There are two south exits; you will want to take the west one, which is " The Feywood / Walk of Dancing Shadow ". Head all the way south and then to the east, so and zone into the next area, which is a 'safe zone' with a blue save point crystal. This map is called: " The Feywood / Antiquity's End ".
When you pasted the southern part of "Walk of Dancing Shadow", you probably killed a few of the Mirrorknights. These are the guys that you will be chaining. Locate and get a general sense of where they are, and what you will be doing is circling the southern part of this map killing all the Mirrorknights. I prefer to do a clockwise run, starting at the bottom of the map and going around. Below are the spoils:
Mirrorknights - CHAIN x 95
Windslicer Pinion x 99 = 113,652 GIL
Mirror Scale x 7 = 13,664 GIL
Wind Crystal x 46 = 7,360 GIL
Aries Gem x 3 = 450 GIL
Mirror Mail x 19 = 76,950 GIL
- - - - - - - - - - - - - - - - - - - - -
TOTAL: 212, 076 GIL
Total time: 23 minutes
= = =
Your time may vary, since my guys are at level 68, but when I originally posted this I was only level 50, which is plenty good enough to kill these guys. I have two warriors equip gambits:
Self -> Haste
Self -> Bravery
Self -> Berserk
And I control manually the 3rd party member. I also have everyone equipped with the 'Cat-ear Hood' accessory which you will get later in the game from the Bazaar, to make things go even quicker. There are many expensive things you may want to buy with the GIL, including all the Monographs, the Canopic Jar, Armor and Items for all your characters, expensive Spells, etc. One important use for the GIL later on is the 'Throw GIL' technick, which becomes very useful for some particular boss battles.
Another thing you might want to buy from the Bazaar is the ' Nihopalaoa ' , which reverses effects of items, such as potions. Niho + Phoenix Down = Instant Death, on any ally, but that also includes enemies. It won't work on bosses or marks, though, but Remedy works just as well if you filled up a lot of the Remedy skills on the License board, you can inflict all sorts of negative conditions on bosses. There are probably other places where you can make lots of money, but after getting Lente's Tear, this is one of the best.
-Kairi
Someone test this and confirm.
Endo, I'm looking at you! (Since you have high enough characters.)
XI Wiki

