http://www.alloscomp.com/bitcoin/calculator
I probably will end up keeping it and mining many more than 35 BTC in its lifetime. But if I could get some BTC now I could invest them into other things. Just trying to make my 25 BTC purchase sting a little less.
BTC will sit in escrow until the item is actually delivered.
No hot potato or scam here.
This calculator is overly optimistic, and it does not account for increasing difficulty.
If you spent 25 BTC on this, then hey, according to your calculations, you should get ROI within less than 3 months, right? So, can you not wait that much?