Originally Posted by
fmopois
If for whatever reason you concentrate more on economical systems, I'd suggest to bind the available amount of money on the ship's size ( larger ships probably go more out of the federation than smaller vessels ) and the characters rank ( probably the promotion points costs, using the player's guide system; high ranking officers tend to spend much time in Starfleet and still should be able to gather personal stuff ). Since the crewmembers do not need to buy food, clothes, etc they probably get less money than our today counterparts.