I don't know how many are familiar with CoSMOS; but if you wanted unlimited cash for now in SP mode of course; it's really easy to use.
PS: Don't forget to set your profile stats to private in the GTAO Social Club settings ...
[Edited by 3vilg3nius, 4/14/2015 1:55:11 AM]
Money is stored in multiple places. It's easier to unlock the stock market, then buy shares, use CoSMOS to give yourself a heap more, then sell them.