Max value lol , ok are you ready.......    when  100 Mr p , (Microripple price, obs...what were you thinking..lol) is $1  or  1 Mr p is 1 cent  ...1 full XRP could be worth over $100k  
When...around 2040, when the system has been fully functioning mainstream for around 25years.
After that a new dawn of tech will challenge this system, the new one could be super qauntum crypto controlled by AI, or something else just as crazy lol.


sorry if some think my answer is a bit nuts...but so are the questions lol.