The Goggles, They Do Naught

One allowance here buys 334,080 EXP, the best of the 6 Lv 50 Goldsmith tradecraft leves that record EXP: the runner-up manages 272,720 EXP, 18% less.

Across that rung the return runs from 33,408 EXP to 334,080 EXP per allowance — 6 distinct figures spanning 900%, so the wrong pick leaves 300,672 EXP of the allowance unspent.

On whether to wait: the best Lv 52 Goldsmith tradecraft leve returns 629,850 EXP per allowance, 89% more than the best on this rung, while the Lv 45 rung behind tops out at 137,400 EXP.

At Lv 50 this data holds 54 leves paying EXP across 2 categories: the 48 Tradecraft ones average 176,840 EXP per allowance, the 6 Fieldcraft ones 553,899 EXP, which puts this leve 89% above its own category's average.

Mythrite Goggles of Gathering ×1 is a Lv 51 Goldsmith recipe, 3 steps deep through 4 intermediates, costing 28 units of raw material and 28 crystals.

Handing that in returns 11,931 EXP and 25 gil for every unit of raw material the order swallows, and the tree needs Alchemist, Blacksmith, Goldsmith and Leatherworker.