The Perfect Accessory
Location
Required Items
Rewards
What the allowance actually buys
One allowance here buys 1,440,660 EXP — the identical figure every one of the 2 Lv 90 Leatherworker tradecraft leves pays, so on this rung the turn-in and the walk are the only things that actually differ.
On whether to wait: the best Lv 92 Leatherworker tradecraft leve returns 2,148,720 EXP per allowance, 49% more than the best on this rung, while the Lv 88 rung behind tops out at 1,703,250 EXP.
At Lv 90 this data holds 18 leves paying EXP across 2 categories: the 16 Tradecraft ones average 1,797,551 EXP per allowance, the 2 Fieldcraft ones 4,395,018 EXP, which puts this leve 20% below its own category's average.
Loboskin Amulet of Fending ×1 is a Lv 91 Leatherworker recipe, 3 steps deep through 4 intermediates, costing 17 units of raw material and 47 crystals.
Handing that in returns 84,745 EXP and 149 gil for every unit of raw material the order swallows, and the tree needs Goldsmith, Leatherworker and Weaver.