Security Breeches
Location
Required Items
Rewards
What the allowance actually buys
One allowance here buys 581,670 EXP, which places it 3rd of the 3 Lv 66 Leatherworker tradecraft leves that record EXP. The best of them, Shrug It On, returns 739,840 EXP for the same allowance, 27% more.
Across that rung the return runs from 581,670 EXP to 739,840 EXP per allowance — 3 distinct figures spanning 27%, so the wrong pick leaves 158,170 EXP of the allowance unspent.
On whether to wait: the best Lv 68 Leatherworker tradecraft leve returns 1,182,260 EXP per allowance, 60% more 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 14% above its own category's average.
Marid Leather Breeches of Maiming ×1 is a Lv 67 Leatherworker recipe, 4 steps deep through 7 intermediates, costing 40 units of raw material and 50 crystals.
Handing that in returns 14,542 EXP and 29 gil for every unit of raw material the order swallows, and the tree needs Alchemist, Leatherworker and Weaver.
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 1,745,010 EXP and 3,516 gil for the 1 allowance it costs, or 1,745,010 EXP per allowance.