Forever 21K

One allowance here buys 13,040 EXP, which places it 4th of the 6 Lv 15 Goldsmith tradecraft leves that record EXP — a figure 1 other leve on the rung matches exactly. The best of them, Bad to the Bone, returns 24,790 EXP for the same allowance, 90% more.

Across that rung the return runs from 10,100 EXP to 24,790 EXP per allowance — 4 distinct figures spanning 145%, so the wrong pick leaves 14,690 EXP of the allowance unspent.

On whether to wait: the best Lv 20 Goldsmith tradecraft leve returns 21,600 EXP per allowance, 13% less than the best on this rung, while the Lv 10 rung behind tops out at 9,990 EXP.

At Lv 15 this data holds 52 leves paying EXP across 2 categories: the 48 Tradecraft ones average 16,554 EXP per allowance, the 4 Fieldcraft ones 78,432 EXP, which puts this leve 21% below its own category's average.

Gil ranks it differently: 173 gil per allowance is 5th of 6 on the same rung against 4th on EXP, with the best there paying 529 gil.

Brass Ring ×1 is a Lv 20 Goldsmith recipe, 2 steps deep through 2 intermediates, costing 5 units of raw material and 4 crystals.

Handing that in returns 2,608 EXP and 35 gil for every unit of raw material the order swallows.