Just Generally Freezing

One allowance here buys 5,149,700 EXP, the best of the 2 Lv 98 Leatherworker tradecraft leves that record EXP: the runner-up manages 3,459,540 EXP, 33% less.

Nothing above Lv 98 is recorded for Leatherworker tradecraft leves, so this rung is the ceiling at 5,149,700 EXP per allowance — 25% more than the Lv 96 rung below it.

At Lv 98 this data holds 18 leves paying EXP across 2 categories: the 16 Tradecraft ones average 3,821,346 EXP per allowance, the 2 Fieldcraft ones 7,606,049 EXP, which puts this leve 35% above its own category's average.

Gargantuaskin Trousers of Striking ×1 is a Lv 99 Leatherworker recipe, 2 steps deep through 5 intermediates, costing 36 units of raw material and 72 crystals.

Handing that in returns 143,047 EXP and 144 gil for every unit of raw material the order swallows, and the tree needs Alchemist, Goldsmith, Leatherworker and Weaver.