0 since technically it doesn't cost you to own and store bitcoin.
From that perspective, it doesn't even cost anything to keep paper money, it can be just an ordinary old shoe box.
Yes, so has at any time paper money value gone negative?
I have personally experienced an economy where paper money becomes worthless a week after the first printing, i.e. worth exactly 0 points. Inflation that was measured in thousands of percent per day
You asked how low it could go, not how will it be priced after the event that will trigger the dump.
OK, I just listed some examples and Bitcoin's susceptibility or resistance to them.
So Yugoslavia had 116 trillion percent rate if you proated the rate out to a year from a months time?
So the actual rate for the one month would have been over a 2 million percent.
as 2 million percent 12 months in a row grows to like 116 trillion percent.
the actual rate did not reach 116trillion for the whole year. but still.
in One month 2,000,000 turned into 1.
That must have been hellish to live through.