Aludane please?
Additions are up to Icygamma however a VCE var for bank money is quite easy to implement. I'm concerned about people harvesting how much money a player has in their bank for malicious purposes. I'll write the code but don't get your hopes up that Icygamma will not want it or allow it.
A payout event feels risky, Do you mean an event like:
onActivate - client - sendMoney [amount]
with the client who activated the event receiving the money and the owner of the brick having money withdrawn?
Make GUI, please.
That wouldn't work because people won't download Guis when you can just use commands.