The low price of bitcoin has started since January 2018 then, right after the emergence of the issue of banning advertisements on Google that hang until June 1, 2018. With the existence of the prohibition issue it made most investors preferring to cancel the project and move backwards rather than continue it.
Bitcoin has it's lowest price of all time, this is the right time to buy bitcoin because bitcoin market is down and in the end of 2018 bitcoin will touch 20k$ above again....!!
$ 20k is the best price as well as the moment that most bitcoin users have been waiting for I hope they keep holding their coins until the end of the year.