I believe bitcoin will cross  $30,000 one day, but not this year. The current price of Bitcoin is about $7,000 & it has to rise 400% within 4 months if it wanna cross the expected price. Everything is possible, I think Bitcoin price will be about  $10,000 at the end of 2018 but not that high. I remember the sudden rise of Bitcoin price in last year and it touched $17,000 by the end of 2017, which is the maximum price ever.