Archon of His Eye
Location
Required Items
Rewards
What the allowance actually buys
One allowance here buys 1,582,910 EXP, the best of the 2 Lv 82 Blacksmith tradecraft leves that record EXP: the runner-up manages 1,525,130 EXP, 4% less.
On whether to wait: the best Lv 84 Blacksmith tradecraft leve returns 1,746,150 EXP per allowance, 10% more than the best on this rung, while the Lv 80 rung behind tops out at 1,355,750 EXP.
At Lv 82 this data holds 18 leves paying EXP across 2 categories: the 16 Tradecraft ones average 1,208,998 EXP per allowance, the 2 Fieldcraft ones 2,464,410 EXP, which puts this leve 31% above its own category's average.
High Durium Knives ×1 is a Lv 83 Blacksmith recipe, 2 steps deep through 4 intermediates, costing 32 units of raw material and 62 crystals.
Handing that in returns 49,466 EXP and 154 gil for every unit of raw material the order swallows, and the tree needs Alchemist, Blacksmith, Carpenter and Leatherworker.