I got this from razor:

You guys should find a new banker, as it is a real nice added benefit. I started out with 10b to wheel and deal with. I have a lot more than that now. If everyone in your cell donated two days worth of gold, you would have 20b in the cells bank. You could then use that interest to upgrade your newer players. Ultimately it would be best to have 86 billion in the bank. Then you can buy one person NA, or anything else a day free of charge, just from the interest.

I'm all for donating my "free" 24 bars a day to our cell so we can upgrade everyone to NA eventually. Who is with me?