Don't Ask about the Rivets
Location
Required Items
Rewards
What the allowance actually buys
One allowance here buys 3,059,520 EXP, which places it 2nd of the 2 Lv 96 Armorer tradecraft leves that record EXP. The best of them, Backing up My Words, returns 4,554,260 EXP for the same allowance, 49% more.
On whether to wait: the best Lv 98 Armorer tradecraft leve returns 3,459,540 EXP per allowance, 24% less than the best on this rung, while the Lv 94 rung behind tops out at 2,454,760 EXP.
At Lv 96 this data holds 18 leves paying EXP across 2 categories: the 16 Tradecraft ones average 3,345,087 EXP per allowance, the 2 Fieldcraft ones 6,726,582 EXP, which puts this leve 9% below its own category's average.
Gil ranks it differently: 5,140 gil per allowance is 1st of 2 on the same rung against 2nd on EXP, with the best there paying 5,140 gil.
Titanium Gold Helm of Casting ×1 is a Lv 96 Armorer recipe, 2 steps deep through 4 intermediates, costing 28 units of raw material and 56 crystals.
Handing that in returns 109,269 EXP and 184 gil for every unit of raw material the order swallows, and the tree needs Alchemist, Armorer, Blacksmith and Leatherworker.