I have a 50 Fisher and a 45 Miner, The only material I ever buy from the AH is Gold Ore, and I will never ever ever again after I get my miner to 46 and get Truth of the Mountains. The marked for gathered materials will always go down as people level up. It's just too easy to get materials yourself. That being said, almost all Crafting gear is useless, as a couple hours of grinding tombs can bypass any gear for DoW/DoM jobs.
It's sad but it's just part of the game. I invested so much money into getting my Goldsmith able to 2* crafts, but the only thing I can ever sell are the following: Crafting items, such as Electrum Choker, Aetherite Rings, and iLv55 Helms; A Relic Reborn Weapons, the BLM item needed for the relic quest that's price is dropping mega fast.
