I won't ever invest in such cloud mining after some issues such as lifetime contract suddenly cancelled and higher withdrawal limit compare with genesis mining.
However, if you can take the risk, it's okay to invest in Hashflare, but be ready to get a loss if something happens.
Net profit on the current 1th based on current market trend and difficulties increase (based on acquisitions of the power at today price) the profit NET is over 600 usd
So it is profitable but no trust. Issues ongoing