I think if anything, for crystals we at least need to have the old rate of getting crystals through aetheric reduction, which was around 65 per collect. It's been several times since 4.1 since I've seen the Wind market get wiped clean. These days I just use ARM for any yellow scrips I do. Completely avoids the need for using Wind, or Lightning, and I use Ice and Earth, which rarely go above 120 gil.

On that note Tempest, if you need crystals, you can always go ahead and farm Diadem, provided you can get another person. 1200 crystals an hour is fairly good. (Seems people forget Diadem existed)