Watching the Western Wall

One allowance here buys 1,306 gil, the best on the Lv 58 Botanist fieldcraft rung — matched exactly by 1 other leve of the 6 there, with the rest trailing at 981 gil or less.

Across that rung the return runs from 449 gil to 1,306 gil per allowance — 4 distinct figures spanning 191%, so the wrong pick leaves 857 gil of the allowance unspent.

On whether to wait: the best Lv 60 Botanist fieldcraft leve returns 1,317 gil per allowance, 1% more than the best on this rung, while the Lv 56 rung behind tops out at 1,608 gil.

At Lv 58 this data holds 72 leves paying gil across 3 categories: the 18 Fieldcraft ones average 747 gil per allowance, the 6 Battlecraft ones 1,218 gil and the 48 Tradecraft ones 688 gil, which puts this leve 75% above its own category's average.

Foundation issues 360 leves in this dataset, Lv 50 through Lv 58, across 12 disciplines.