In game methods to balance economy

[Raistlin]

I am not an economist, but could be posible to add features in game enough "expensive" in gils to people who have too much gils have a way to use it?

Example:

Hair Change: 2.000.000g
Hair Color: 2.000.000g
Skin Color Change 5.000.000g


Basically adds expensive features to allow people waste it if they want and not adding items to economy. With things like this we can have a Black Hole for gils (Chocobo colors, Third Retainer, Change Armor Color, Eyes color, Airship pass without quest, etc etc etc)

suggestions?

Note: of course this is only some help, not "the key" to fix economy