IF you are free player - wait for any event. Farm "event items" usualy can bring profit.
Most ppl in game wining on hardness, and not try see the forum, thats a pity.
Most needed items - Shield awake scrolls (5 ndc shop price) magus less rare
Ult gems, vote coupons - always wanted (try vote to get bonus VP, so you can sell all coupons)
Make Heaven weapons (need some guardian killers) bit easy than wings.
Good way - made many chars, rb to 175 for loot, save all junk from special scrolls, you can made Heavens from it.
Make useful cards from tidus shop like Beatrix or Carbuncle.
One advice - not all items on vendor have value. Most of them sell trash.
Not see results in posting guides, or report bug. Its only cause negative from other players.
So no more Reports from me.
Found some bug? Use it in good health...