but if nobody else is willing to pay more than 7 cents, that's the value of it, the 70k "invested" are long gone!
you got things wrong way round
when no one wants to sell coin for less than 7cents. then 7cents becomes the supported value as thats the stop and non-zero bottom
the premium is the highest amount a community is willing to pay before everyone says and agree's its too much
so if everyone on a certain date in the future lost confidence in bitcoin and it dropped to say 3 cents and no one wanted to pay above 7cents. then the premium is 7 cents.. and the value would be somewhere below 3 cents