Shut Up and Take My Gil

One allowance here buys 11,040 EXP, which places it 6th of the 6 Lv 15 Alchemist tradecraft leves that record EXP. The best of them, Book and a Hard Place, returns 22,790 EXP for the same allowance, 106% more.

Across that rung the return runs from 11,040 EXP to 22,790 EXP per allowance — 4 distinct figures spanning 106%, so the wrong pick leaves 11,750 EXP of the allowance unspent.

On whether to wait: the best Lv 20 Alchemist tradecraft leve returns 21,600 EXP per allowance, 5% less than the best on this rung, while the Lv 10 rung behind tops out at 12,030 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 33% below its own category's average.

Gil ranks it differently: 230 gil per allowance is 3rd of 6 on the same rung against 6th on EXP, with the best there paying 468 gil.

Ash Wand ×1 is a Lv 16 Alchemist recipe, 3 steps deep through 2 intermediates, costing 5 units of raw material and 4 crystals.

Handing that in returns 2,208 EXP and 46 gil for every unit of raw material the order swallows.