The Ear Is the Way to the Heart
Location
Required Items
Rewards
What the allowance actually buys
One allowance here buys 395,430 EXP, which places it 2nd of the 3 Lv 66 Carpenter tradecraft leves that record EXP. The best of them, Everybody's Heard about the 'Berd, returns 739,840 EXP for the same allowance, 87% more.
Across that rung the return runs from 270,320 EXP to 739,840 EXP per allowance — 3 distinct figures spanning 174%, so the wrong pick leaves 469,520 EXP of the allowance unspent.
On whether to wait: the best Lv 68 Carpenter tradecraft leve returns 556,350 EXP per allowance, 25% less than the best on this rung, while the Lv 64 rung behind tops out at 489,060 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 23% below its own category's average.
Persimmon Earrings ×1 is a Lv 67 Carpenter recipe, 3 steps deep through 4 intermediates, costing 13 units of raw material and 26 crystals.
Handing that in returns 30,418 EXP and 187 gil for every unit of raw material the order swallows, and the tree needs Alchemist and Carpenter.