Begin with the Basics
Location
Required Items
Rewards
What the allowance actually buys
One allowance here buys 2,695,430 EXP, the best of the 2 Lv 90 Weaver tradecraft leves that record EXP: the runner-up manages 1,440,660 EXP, 47% less.
On whether to wait: the best Lv 92 Weaver tradecraft leve returns 3,115,640 EXP per allowance, 16% more than the best on this rung, while the Lv 88 rung behind tops out at 2,257,300 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 50% above its own category's average.
Snow Cotton Jacket ×1 is a Lv 91 Weaver recipe, 2 steps deep through 4 intermediates, costing 30 units of raw material and 63 crystals.
Handing that in returns 89,848 EXP and 169 gil for every unit of raw material the order swallows, and the tree needs Leatherworker and Weaver.