I invest 1.5 btc in hashflare SHA-256, and it's been 14 months but haven't been getting the RoI. It used to be priced around $220 but I regret because the current price has reached $1,250. So in conclusion, I do not trust with hashflare and all cloud mining.
for 1.5btc, you could had your own pro mining gear.
This is what I've been saying for a lot of times. These type of investment are just the same with HYIP's. The advantage will always go with the owner/s not with the investor/s. We know that they are making people fool that they are actually doing some mining real and selling real hash to you people. But in reality, there's no such thing as mining farm/rig from them.