Here is video showing the price movement of Bitmain Antminer S19 for past one year.
Notice the Dip in June-July

Thanks @hashrateindex, your charts made this easier🔥

Play with charts here😊
https://t.co/ioR8L6FClw

@BITMAINtech       https://t.co/QrS7Xf8GHr