This is my first reply. I actually found a way to contribute.
There may even be a cheaper way to level 360-375 depending if your other profession is mining.
Enchant Chest - Defense
5 sec cast
Tools: Runed Fel Iron Rod
Reagents: Greater Planar Essence (4), Arcane Dust (
, Eternium Ore (4)
Permanently enchant a piece of chest armor to grant 15 defense rating. Requires a level 35 or higher item.
This is learned with Shattered Sun rep of Honored which is quick to come to if you do any of the daily quests.
On my server these parts (If all were purchased on AH) cost about 35g
where as
2x Large Prismatic Shard (~20-30g each)
2x Greater Planar Essence (~5-10g each)
would cost you 70g