Spell-rebound
Location
Required Items
Rewards
What the allowance actually buys
One allowance here buys 625,040 EXP, the best of the 3 Lv 66 Alchemist tradecraft leves that record EXP: the runner-up manages 395,430 EXP, 37% less.
Across that rung the return runs from 237,260 EXP to 625,040 EXP per allowance — 3 distinct figures spanning 163%, so the wrong pick leaves 387,780 EXP of the allowance unspent.
On whether to wait: the best Lv 68 Alchemist tradecraft leve returns 681,530 EXP per allowance, 9% more than the best on this rung, while the Lv 64 rung behind tops out at 379,020 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 22% above its own category's average.
Marid Leather Grimoire ×1 is a Lv 67 Alchemist recipe, 3 steps deep through 6 intermediates, costing 30 units of raw material and 44 crystals.
Handing that in returns 20,835 EXP and 108 gil for every unit of raw material the order swallows, and the tree needs Alchemist, Carpenter, Culinarian, Goldsmith and Leatherworker.