I have to agree with most of the others. Safety stones are too expensive, and world calls are too cheap.
I also think costumes are really strangely priced. The glasses and wings are ridiculously expensive. Honestly, since the costumes are all bind on equip, I think all of them, except the kimonos, should be made significantly cheaper. $20 for one piece would make a lot more sense if I could sell it when I am tired of wearing it (but even then, that's still too much for a simple back or face equip).
Bags seem a little pricey to me too. I would expect to pay $2 or less for a five slot bag. And the bank rental should have its duration extended or it should be cheaper.
Dyes, legacies, and exp boost items all seemed fair to me though.