Originally Posted by http://boards.gamefaqs.com/gfaqs/genmessage.php?board=197344&topic=26502434
[3.8] BrainDamageEclipse's cut out and keep cash trick guide:
Epaaj (before airship): Fight outside the sunken cave, you will encounter them every fight. Epaaj drop SOS overdrive weapons, which sell for up to 75,187 gil depending on the number of empty slots. Also, they sometimes drop tetra armour. (see customisation)
When you have the airship:
Customisation: Go to Kilika shop, buy tetra armour for 2250 gil. Customise and sell.
Customise with:__Item(s) required________Sell for:
HP+30%_______1x stamina tonic_______28406gil
MP+30%_______1x mana tonic_________34031gil
SOS regen______12x healing spring_____37781gil
Get items for customisation:
Item__________Overkill____________Capture_________Steal (*rare steal)
Stamina tonic___Abyss worm (4)_____Besaid (99)_______Machea* (1), Dark Yojimbo (2)
Mana tonic_____Malboro menace (4)__Insects (60)______Great Malboro* (1)
Healing spring__Kottos (40)_________Mushrooms (99)___Achelous, Behemoth king
Example: Capture the fiends in Besaid, get 99x stamina tonic from arena guy.
Buy tetra armour for 2250 gil in Kilika, customise and sell for 28406 gil.
That's 26,156 gil profit per stamina tonic. So, 99 stamina tonics = 2,589,444 gil.
However, you might want to save some for later, as you won't get them that easily again.
Gillionaire: Get double gil when you kill a monster while equipped character is in the front row. (Very useful against mimics in the omega dungeon - steal from treasure chests in battles to fight them).
Get Rikku's Godhand fully powered or customise with 30x designer wallet.
(Designer wallet: Capture omega ruins fiends for 60, or steal from don tonberry or cactuar king using master thief).
Monster arena: Arena creations always drop equipment when defeated. These can be sold, and some are worth a lot.
Example: One eye (capture flying eyeballs to unlock). Sell any unwanted triple AP weapons he drops.
Credits to BrainDamageEclipse
