Bulking Up
Location
Required Items
Rewards
What the allowance actually buys
One allowance here buys 1,103,750 EXP, the best on the Lv 78 Goldsmith tradecraft rung — matched exactly by 1 other leve of the 3 there, with the rest trailing at 662,250 EXP or less.
On whether to wait: the best Lv 80 Goldsmith tradecraft leve returns 724,620 EXP per allowance, 34% less than the best on this rung, while the Lv 76 rung behind tops out at 919,160 EXP.
At Lv 78 this data holds 27 leves paying EXP across 2 categories: the 24 Tradecraft ones average 955,432 EXP per allowance, the 3 Fieldcraft ones 2,129,178 EXP, which puts this leve 16% above its own category's average.
Dwarven Mythril Rapier ×1 is a Lv 78 Goldsmith recipe, 2 steps deep through 4 intermediates, costing 24 units of raw material and 48 crystals.
Handing that in returns 45,990 EXP and 202 gil for every unit of raw material the order swallows, and the tree needs Blacksmith, Carpenter and Goldsmith.