Fire and Hide

One allowance here buys 4,440 EXP, which places it 6th of the 6 Lv 20 Leatherworker tradecraft leves that record EXP. The best of them, Open to Attack, returns 24,710 EXP for the same allowance, 457% more.

Across that rung the return runs from 4,440 EXP to 24,710 EXP per allowance — 4 distinct figures spanning 457%, so the wrong pick leaves 20,270 EXP of the allowance unspent.

On whether to wait: the best Lv 25 Leatherworker tradecraft leve returns 41,630 EXP per allowance, 68% more than the best on this rung, while the Lv 15 rung behind tops out at 18,910 EXP.

At Lv 20 this data holds 52 leves paying EXP across 2 categories: the 48 Tradecraft ones average 17,352 EXP per allowance, the 4 Fieldcraft ones 113,304 EXP, which puts this leve 74% below its own category's average.

Aldgoat Leather ×1 is a Lv 17 Leatherworker recipe, a single step, costing 2 units of raw material and 1 crystal.

Handing that in returns 2,220 EXP and 54 gil for every unit of raw material the order swallows.

The record carries a repeats value of 2. This site reads that as 2 further turn-ins on the same leve — an assumption, because the source data defines no meaning for the field — which would put the ceiling at 13,320 EXP and 321 gil for the 1 allowance it costs, or 13,320 EXP per allowance.