It's Not a Job, It's a Calling
Location
Required Items
Rewards
What the allowance actually buys
One allowance here buys 17,230 EXP, which places it 6th of the 6 Lv 40 Leatherworker tradecraft leves that record EXP. The best of them, Not So Alike in Dignity, returns 125,680 EXP for the same allowance, 629% more.
Across that rung the return runs from 17,230 EXP to 125,680 EXP per allowance — 5 distinct figures spanning 629%, so the wrong pick leaves 108,450 EXP of the allowance unspent.
On whether to wait: the best Lv 45 Leatherworker tradecraft leve returns 137,400 EXP per allowance, 9% more than the best on this rung, while the Lv 35 rung behind tops out at 94,160 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 76% below its own category's average.
Peiste Leather ×1 is a Lv 38 Leatherworker recipe, a single step, costing 2 units of raw material and 4 crystals.
Handing that in returns 8,615 EXP and 87 gil for every unit of raw material the order swallows.
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 51,690 EXP and 519 gil for the 1 allowance it costs, or 51,690 EXP per allowance.