There's nothing difficult about crafting Baked Pipira Pira in the slightest. The mats are incredibly easy to acquire. Steamed staff is isn't a hassle either. The only barrier to that is retribution staff, which is still easy to fish if you're willing to go into diadem.

Prices stay that high because people are willing to pay it. Supply and demand.

Gil is easy enough to come by if you're willing to work for it. Go run diadem and buy mats with your spoils. Find something your retainers can bring you that sells well. Level a DoH class (fishing is cheap and fast.)

Just don't complain if you're not willing to do the work. That's like complaint about not having a thordan weapon when you're not willing to learn the fight.