By the Short Hairs

One allowance here buys 99,220 EXP, the best of the 6 Lv 30 Weaver tradecraft leves that record EXP: the runner-up manages 67,730 EXP, 32% less.

Across that rung the return runs from 34,430 EXP to 99,220 EXP per allowance — 6 distinct figures spanning 188%, so the wrong pick leaves 64,790 EXP of the allowance unspent.

On whether to wait: the best Lv 35 Weaver tradecraft leve returns 115,720 EXP per allowance, 17% more than the best on this rung, while the Lv 25 rung behind tops out at 47,200 EXP.

At Lv 30 this data holds 52 leves paying EXP across 2 categories: the 48 Tradecraft ones average 44,832 EXP per allowance, the 4 Fieldcraft ones 275,323 EXP, which puts this leve 121% above its own category's average.

Gil ranks it differently: 413 gil per allowance is 2nd of 6 on the same rung against 1st on EXP, with the best there paying 473 gil.

Velveteen Robe ×1 is a Lv 31 Weaver recipe, 3 steps deep through 4 intermediates, costing 13 units of raw material and 16 crystals.

Handing that in returns 7,632 EXP and 32 gil for every unit of raw material the order swallows, and the tree needs Goldsmith and Weaver.