Put the Metal to the Peddle
Location
Required Items
Rewards
What the allowance actually buys
One allowance here buys 280,630 EXP, which places it 2nd of the 3 Lv 66 Goldsmith tradecraft leves that record EXP. The best of them, Best-laid Planispheres, returns 1,084,260 EXP for the same allowance, 286% more.
Across that rung the return runs from 237,260 EXP to 1,084,260 EXP per allowance — 3 distinct figures spanning 357%, so the wrong pick leaves 847,000 EXP of the allowance unspent.
On whether to wait: the best Lv 68 Goldsmith tradecraft leve returns 681,530 EXP per allowance, 37% less than the best on this rung, while the Lv 64 rung behind tops out at 709,140 EXP.
At Lv 66 this data holds 27 leves paying EXP across 2 categories: the 24 Tradecraft ones average 510,818 EXP per allowance, the 3 Fieldcraft ones 1,156,384 EXP, which puts this leve 45% below its own category's average.
Durium Ingot ×1 is a Lv 66 Goldsmith recipe, 2 steps deep through 1 intermediate, costing 9 units of raw material and 9 crystals.
Handing that in returns 31,181 EXP and 180 gil for every unit of raw material the order swallows.