20 means ~ 5 month price return? At that moment there will be a lot of ASIC miners online, possible some new (KNC). BTC income will be 1-2 per month. Where is profit?
I can't understand it - who can explain?
Why should anyone explains anything to you? Do you question ROI and value when your friends buy a car? You must be a fucking horror to be around. Either bid or gtfo.