will he make ROI in BTC that he spend for 30 TH/s contracts?
![Grin](https://bitcointalk.org/Smileys/default/grin.gif)
it costs 90 BTC at current price of GHS (0.003 / GHS)
90 BTC * $623 = $56070
based on calculations using
this calculatorget rid pool fee, electricity price, hardware power and another cost, so :
- if Difficulty Increment : 20% per period ->
He won't make ROI- if Difficulty Increment : 15% per period ->
He also won't make ROI- if Difficulty Increment : 10% per period -> He will make ROI
after (216 days)/ 7.2 monthsBig Questions :1. Will Bitcoin Difficulty Increment stays at 10% increase every period of difficulty adjusting?
most likely NO
2. Will PBmining still with their service until then?
Nobody Knows
3. Is it wise to invest with this uncertain condition?
You can answer this
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