This trick requires at least two memory cards and the compatibility for multiplayer (at least two GBAs and at least two GameCube-to-GBA cables). Note: Some of these steps require that you collect Myrrh in order for the next event to take place.
1. Once you reach Alfitaria, look for a Lilty-looking soldier named Knocfelna and speak to him. He will tell you a little about Alfitaria's princess.
This starts a sequence of events that you must progress through in order to complete this trick.
2. Speak to Te Odow, a peddler in Marr's Pass.
3. Bump into the disguised princess at Jegon River.
4. Encounter Knocfelna at Jegon River.
5. Speak to the princess and Knocfelna in the Fields of Fum.
6. Encounter the princess and Knocfelna in Leuda.
7. Exit Leuda BY LAND to watch a movie about the princess.
8. Save your game
9. Enter Alfitaria to watch the final movie sequence. *
*= Save before you enter Alfitaria. If you already have GBAs hooked up, then good for you, but if you don't, hook up as many as you possibly can. If you do not already have at least four characters, make as many characters as you have hooked up GBAs. Now, once you have as many characters as possible, enter Alfitaria. You will receive 100,000 gil for every character that's involved in Step 9.
Now, save the game and copy your Crystal Chronicles file onto another memory card. Now turn the game back on and import a character(s) that received the 100,000 gil from one memory card to the one that you are playing on. Now enter a level with at least two characters and drop the 100,000 gil from one character and pick it up with the other. After giving all of the gil to one memory card, delete the extra file and copy the original again. Now when you go to do the cheat again, the character has at least 200,000 gill to drop. Repeat the deleting/copying until you have all the gil that you could ever wish for.