A Leg to Stand On

One allowance here buys 69,150 EXP, the best of the 6 Lv 25 Armorer tradecraft leves that record EXP: the runner-up manages 58,010 EXP, 16% less.

Across that rung the return runs from 16,080 EXP to 69,150 EXP per allowance — 6 distinct figures spanning 330%, so the wrong pick leaves 53,070 EXP of the allowance unspent.

On whether to wait: the best Lv 30 Armorer tradecraft leve returns 67,730 EXP per allowance, 2% less than the best on this rung, while the Lv 20 rung behind tops out at 21,600 EXP.

At Lv 25 this data holds 52 leves paying EXP across 2 categories: the 48 Tradecraft ones average 31,772 EXP per allowance, the 4 Fieldcraft ones 204,269 EXP, which puts this leve 118% above its own category's average.

Gil ranks it differently: 329 gil per allowance is 3rd of 6 on the same rung against 1st on EXP, with the best there paying 406 gil.

Heavy Iron Flanchard ×1 is a Lv 25 Armorer recipe, 3 steps deep through 3 intermediates, costing 17 units of raw material and 12 crystals.

Handing that in returns 4,068 EXP and 19 gil for every unit of raw material the order swallows, and the tree needs Armorer, Blacksmith and Leatherworker.