I've made some math.
If difficulty will continue to rise 20% each retarget from now on, I'll make 85BTC in 6 months. I'll never make the 102BTC I've paid

.
What's your opinion?
We don't know future. So there is still tiny possibility that you can get your investment back .
But as I said in other threads, batch#3 customers are in an awkward position.
No matter refund or waiting for miner, you are losing money everyday.