Let's keep this short and simple, the maximum price a Bitcoin can be.
Since the M3 model says US$75 trillion exists in the world, with 21 million bitcoins, that is around US$3,500,000, meaning, if all of the world's currency were to be swapped with that much, 1 US dollar could equal BTC0.00000028. (or 28 satoshies) Discuss how you think life would be like, and discuss bitcoin being worth $3m in general. Enough said. Discuss.