Binding Spells
Location
Required Items
Rewards
What the allowance actually buys
One allowance here buys 3,115,640 EXP, the best of the 2 Lv 92 Alchemist tradecraft leves that record EXP: the runner-up manages 1,665,250 EXP, 47% less.
On whether to wait: the best Lv 94 Alchemist tradecraft leve returns 3,559,400 EXP per allowance, 14% more than the best on this rung, while the Lv 90 rung behind tops out at 2,695,430 EXP.
At Lv 92 this data holds 18 leves paying EXP across 2 categories: the 16 Tradecraft ones average 2,274,718 EXP per allowance, the 2 Fieldcraft ones 5,080,188 EXP, which puts this leve 37% above its own category's average.
Crocodileskin Index ×1 is a Lv 92 Alchemist recipe, 2 steps deep through 4 intermediates, costing 30 units of raw material and 63 crystals.
Handing that in returns 103,855 EXP and 169 gil for every unit of raw material the order swallows, and the tree needs Alchemist, Carpenter and Leatherworker.