Depending on which bank ,how the ATM is configured ,what time of the week it is which would determine how much $$$ is actualy in the M/C and you could realize ALOT more money for way less risk … the ATM's I am familiar with were capable of having up to 8000 bills of whatever you wanted ready to dispense and they often stored bundles of extra cash to restock the ATM
Most places don't load up their machines to capacity, but ya they can hold a lot. When I worked for the bank we topped it around $60k, but there was room for $30k more at least.