Well thank god there isn't a shortage of RMT shouts for you then.
Joking aside, it only take a bit of research to see what is selling well on the market.
Take the Coliseum Galerus dungeon loot for one, worth 50-60k on Hyperion market.
In short, if you don't want to craft, then you farm drops.
If you don't want to put any effort into farming, then don't expect a pile of gil raining from the sky anytime soon. Lest you want to pay for RMT gil, which is against the ToS.
Oh, right and even though I'm legacy I've kept track of my gil.
So far I've sold 0 items on the market wards, and so far I've net a gain of 270k gil.
Repaired only twice, melted the rest of the equipment while leveling up into materia.
