Cheats
The Infinite Gil Trick
The idea behind the infinite gil trick is to buy raw materials, refine them into a finished product, and sell that product back to a shop for a profit. Some of the raw materials are readily available. You can purchase them directly from the shops, allowing you to continue buying and selling items repeatedly until you have as much gil you want.
It’s hard to label this a cheat, given that these functions are readily available and exploitable in the game without doing anything untoward. Maybe it should just be considered a clever use of game mechanics? (Or maybe a clever abuse of game mechanics…)
The Basic Steps
Purchase 100 
Tent items from one of the shops, either when you open the shop directly or by utilizing 
Call Shop to pull open a shop anywhere. Use the Recov Med-RF ability (which Carbuncle can learn) to turn those Tents into 
Mega-Potions.
100 Tents will cost you 100,000 gil. They will refine into 25 Mega-Potions, which sell for 125,000 gil each, meaning you will earn 25,000 gil each time you complete this process.
The Advanced Steps
There are several steps you can take to increase the speed and efficiency of this process. These all have to do with specific abilities that Tonberry can learn, including:
- Call Shop: Allows you to access any of the shops in the game at any time by selecting Call Shop from the ability menu in the main game screen.
- Familiar: Opens up new items for purchase at some of the shops. Namely, the shop in Esthar (Johnny’s Shop) will now sell you a Cottage, which can you can also refine into Mega-Potions using Recov Med RF so you can convert more items at the same time.
- Haggle: Allows you to purchase both Tents and Cottages at a discounted price.
- Sell-High: Allows you to sell Mega-Potions back to shops at a higher price.
Using these advanced steps, each time you buy raw materials and resell the refined products back to the shop, you will bump your profits from a measly 25,000 gil up to a total profit of 562,400 gil each time you repeat the process.
