To put it into perspective I've put $98 USD into my Hashflare.io account and let it reinvest to build up hashrate and I've earned 0.01778436 BTC back so far. That's $51.86 in the 3 months that I've been mining for. Again like I said, not 100% ROI yet but it's almost halfway there already. So take that however you will.
Correct me if I am wrong, but everything that you have 'earned' through 'mining' so far (0.01778436), is invested back into more mining power?
If that's the case, you haven't earned anything as you have given everything back to hashflare to increase your total hash rate. It means that you have to start from scratch again.......