Better Four Eyes than None

One allowance here buys 6,880 EXP, which places it 5th of the 6 Lv 10 Goldsmith tradecraft leves that record EXP. The best of them, All That Glitters, returns 9,990 EXP for the same allowance, 45% more.

Across that rung the return runs from 2,230 EXP to 9,990 EXP per allowance — 4 distinct figures spanning 348%, so the wrong pick leaves 7,760 EXP of the allowance unspent.

On whether to wait: the best Lv 15 Goldsmith tradecraft leve returns 24,790 EXP per allowance, 148% more than the best on this rung, while the Lv 5 rung behind tops out at 3,600 EXP.

At Lv 10 this data holds 52 leves paying EXP across 2 categories: the 48 Tradecraft ones average 8,265 EXP per allowance, the 4 Fieldcraft ones 43,676 EXP, which puts this leve 17% below its own category's average.

Gil ranks it differently: 288 gil per allowance is 2nd of 6 on the same rung against 5th on EXP, with the best there paying 293 gil.

Brass Spectacles ×1 is a Lv 14 Goldsmith recipe, 3 steps deep through 3 intermediates, costing 6 units of raw material and 8 crystals.

Handing that in returns 1,147 EXP and 48 gil for every unit of raw material the order swallows, and the tree needs Alchemist and Goldsmith.