ROI = Return of investment. Investment was in USD (actually in euros). Payouts are in BTC. Besides, you never know what difficulty will exactly be in the future. It's not just like that.
ROI = Return of investment. Investment was in USD (actually in euros). Payouts are in BTC. Besides, you never know what difficulty will exactly be in the future. It's not just like that.
RE: 10% ROI in 17 days with Genesis mining