I always find it helpful to use inexact phrasing as others have mentioned (enough for a meal at the CUL guild, enough for a chocobo porter to a distant camp, etc.) but when Jana hands anyone a large amount of Gil, I've made use of the promissory banknote as well.
I've also characterized her as someone who lives frugally but actually has a lot of money she's willing to drop on unexpected problems, so instances in which she pisses a lot of Gil away for a specific IC purpose are usually done with a banknote.
I've also characterized her as someone who lives frugally but actually has a lot of money she's willing to drop on unexpected problems, so instances in which she pisses a lot of Gil away for a specific IC purpose are usually done with a banknote.