Twice as Slice

One allowance here buys 13,090 EXP, the best of the 6 Lv 10 Blacksmith tradecraft leves that record EXP: the runner-up manages 9,990 EXP, 24% less.

Across that rung the return runs from 8,430 EXP to 13,090 EXP per allowance — 3 distinct figures spanning 55%, so the wrong pick leaves 4,660 EXP of the allowance unspent.

On whether to wait: the best Lv 15 Blacksmith tradecraft leve returns 18,910 EXP per allowance, 44% more than the best on this rung, while the Lv 5 rung behind tops out at 5,220 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 58% above its own category's average.

Gil ranks it differently: 173 gil per allowance is 3rd of 6 on the same rung against 1st on EXP, with the best there paying 529 gil.

Spiked Bronze Labrys ×1 is a Lv 14 Blacksmith recipe, 2 steps deep through 2 intermediates, costing 12 units of raw material and 6 crystals.

Handing that in returns 1,091 EXP and 14 gil for every unit of raw material the order swallows, and the tree needs Blacksmith and Carpenter.