Good find Hairspray. Thanks!
My 2 cents on this is that poster here determined through testing, and I have verified, that Leve rewards change when you turn in a Leve -or- Level up.
So, if you are like me and take a casual approach to crafting, you may be sitting around 90-95 Leve allowances, it may be a good idea for you to change the rewards by completing a single turn in Leve, like a pair of gloves, so that the reward for the triple turn-in changes form say Crystals to Diremite Webs. Then the 9 Coifs of gathering net you 30 Diremite Webs, instead of crystals. Ideally you could just do the triple leve twice if you have enough mats, and use allowances only for triples.
Anyway, I found it's beneficial to know how to manipulate the rewards before you turn in 9 or 15 items.
Edited, Sep 25th 2013 9:33am by Gnu