There's no real way to tell but I can guarantee most of us dream of this to happen. $1 per satoshi would mean a bitcoin would be worth $100,000,000 which is pure insanity and 99% of us would be rolling in $$$. Also with 21 million bitcoins in circulation at 100 million per coin, well you do the math. I think 1 cent or maybe even 10 cents per satoshi would still be amazing and somewhat reasonable. Then again who knows what will end up happening. In my opinion I couldn't see bitcoins being worth over a million dollars and that's a HUGE stretch, more than likely it wouldn't go above $50,000.