as of now the price of bitcoin is now $12,100 it will reach $15,000 before end of this december but if only reach $13,000 to $14,000 this end of december maybe it will reach $15,000 in january 2018.
Agreed, we have got more chances of reaching $13000 - $14000 at the earliest with the same growth. No need of waiting till the first quarter of 2018 to experience the $15000 barrier. As we are at the starting days of the last month, surely the investor base expecting profit will increase leading to growth.