A friend of mine made some special ATMs and they happen to be full of money.  They give out $100 dollars every day automatically, doesn't matter where they are.  Don't need at ATM card or anything.

Well I put an advertisement on the internet and some people bought them from me.  I promised to send them out soon.  Didn't say exactly when or make any promises about how much money was left in them!

So my question is should I ship them to the buyers now, or after they're empty?  Thanks for helping me with this crucial decision.