Don't Forget to Take Your Meds
Location
Required Items
Rewards
What the allowance actually buys
One allowance here buys 11,560 EXP, which places it 5th of the 6 Lv 20 Alchemist tradecraft leves that record EXP. The best of them, Everything Is Impossible, returns 21,600 EXP for the same allowance, 87% more.
Across that rung the return runs from 7,710 EXP to 21,600 EXP per allowance — 4 distinct figures spanning 180%, so the wrong pick leaves 13,890 EXP of the allowance unspent.
On whether to wait: the best Lv 25 Alchemist tradecraft leve returns 43,600 EXP per allowance, 102% more than the best on this rung, while the Lv 15 rung behind tops out at 22,790 EXP.
At Lv 20 this data holds 52 leves paying EXP across 2 categories: the 48 Tradecraft ones average 17,352 EXP per allowance, the 4 Fieldcraft ones 113,304 EXP, which puts this leve 33% below its own category's average.
Potion of Intelligence ×3 is a Lv 16 Alchemist recipe, a single step, costing 3 units of raw material and 2 crystals.
Handing that in returns 3,853 EXP and 34 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 34,680 EXP and 303 gil for the 1 allowance it costs, or 34,680 EXP per allowance.