Distill and Know that I'm Right

One allowance here buys 61,560 EXP, which places it 5th of the 6 Lv 40 Armorer tradecraft leves that record EXP — a figure 1 other leve on the rung matches exactly. The best of them, Liquid Persuasion, returns 102,600 EXP for the same allowance, 67% more.

Across that rung the return runs from 61,560 EXP to 102,600 EXP per allowance — 4 distinct figures spanning 67%, so the wrong pick leaves 41,040 EXP of the allowance unspent.

On whether to wait: the best Lv 45 Armorer tradecraft leve returns 152,230 EXP per allowance, 48% more than the best on this rung, while the Lv 35 rung behind tops out at 82,760 EXP.

At Lv 40 this data holds 52 leves paying EXP across 2 categories: the 48 Tradecraft ones average 72,545 EXP per allowance, the 4 Fieldcraft ones 560,212 EXP, which puts this leve 15% below its own category's average.

Mythril Alembic ×1 is a Lv 40 Armorer recipe, 3 steps deep through 5 intermediates, costing 13 units of raw material and 34 crystals.

Handing that in returns 4,735 EXP and 24 gil for every unit of raw material the order swallows, and the tree needs Armorer, Blacksmith and Goldsmith.

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 184,680 EXP and 954 gil for the 1 allowance it costs, or 184,680 EXP per allowance.