will it happen again? what can bring us there

which coin are you talking about? Some alt have the potential to go higher than that but a lot won't reach 1$

the days of darkcoin being $15....litecoin over $10

will we ever see any coin that has more than 1 million coins go up that price?

it will take time, bitcoin didn't reach that price in a year and there's too many alt fighting the money available