How to made gills?

I spend over 10+ million get gear and meld for craters and gathers. I try to sell end game mats and craft items will little success. How to made my money back?

Wait for new content.

Staying on top of new recipes, new nodes, and new materials the first week they release will make you all the gil you'll ever need for that patch. Even battle related content such as Palace of the Dead or Beastman tribes made people 10+ million gil just selling the new items.

How did you make the 10 million gil to begin with?

Other than the standard ways of whatever it is you did to get your money in the first place, the best time to make gil is at the start of a new patch.

Either wait for a new patch (and be prepared with a varity of now-cheap-then-expensive mats.. but that's a bit of luck included).

Level desynth, to get cheap 'high' value mats out of dungeons drops (and in terms of battle demi 3, save them for niddhog/sephi/sophia weapon release).

Search for niches on market and sell lvl 10-50 hq gear for 10-50k.

Run Weeping City and Palace of the Dead. Sell grade 5 materia earned by turning in mhachi matter and potsherds. Sell the rarer items you receive from the iron / bronze trimmed sacks (which can sometimes be grade 5 materia).

Selling on the Market board demands time. Maintaining a low price is pretty key to most sales. If you have the time and have the right things to sell you can make a ton of gil in this game.

- Food.
- Potions.
If you can not make them then sell their materials.

- Grade 4 and 5 Carbonized Matter.
- Grade V and IV materia.
- Some minions.
- Bardings.
- Glamour (weapons, sets)

Best time to make Gil is at the beginning of patch as mentioned above.

Battlecraft 3 Demimateria from desynthing. Nuff said right there. It's a mostly untapped market on most servers, and they sell almost as fast as you can put them on the market, so long as you don't flood it.

I'm surprised nobody mentioned fish and amphibians, the theory of evolution, and all sorts of breathing organs.