Gold Ore/Gold Ingot
Location: Labyrinth Of Onzozo
Target: Goblin Miner(Ore)/Goblin Enchanter(Ingot)
Level Suggested: 75, i would say 66+ but the links might be a bit too hard to handle.
Gold Ingot, selling for 15-16k a pop on my server (Odin) and around 180k a stack, Miners also are generous to me and drop gold ores. So while waiting for manta respawns I know what I'll be doing. The Goblins also drop other ingots as well, and also drop 90-110gil, it isn't much but it does add up.