Majority of the exchanges in the market are using fake volumes and it is documented and the price manipulation in tokens are evident and the manipulation will continue unless there is strict regulation for exchanges and if that happens then they will not dare to manipulate the price as it will attract heavy fines and suspension of license and so on, until then we have to accept these realities since this is a new market.
Even if some countries comes up with proper regulation most of these exchanges will move out to free heavens.