I would say it will hit 28K mark by the end of year 2018 and will gradually come down to 20K - 22K mark and will see a resistance from the supporters in the early 2019. Again it will start raising in prices after the drop. Time to reach 50K mark is not far away, we will see it happen in the late 2020.
Whenever there is a sudden change in price there will be a fall in price that follows before some people start resisting the price fall.