Brain Candy
Location
Required Items
Rewards
What the allowance actually buys
One allowance here buys 32,757 EXP, which places it 3rd of the 4 Lv 10 Fisher fieldcraft leves that record EXP — a figure 1 other leve on the rung matches exactly. The best of them, Fish by Many Other Names, returns 54,594 EXP for the same allowance, 67% more.
On whether to wait: the best Lv 15 Fisher fieldcraft leve returns 98,039 EXP per allowance, 80% more than the best on this rung, while the Lv 5 rung behind tops out at 35,601 EXP.
At Lv 10 this data holds 52 leves paying EXP across 2 categories: the 4 Fieldcraft ones average 43,676 EXP per allowance, the 48 Tradecraft ones 8,265 EXP, which puts this leve 25% below its own category's average.
Nothing on the turn-in list is craftable in this data: Pebble Crab ×3 has no recipe here, so 3 units must come from gathering, a vendor or a drop.
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 98,271 EXP and 195 gil for the 1 allowance it costs, or 98,271 EXP per allowance.