If you look at the expected ROI for mining equipment, I think the returns are reasonable.
ROI for a mining rig is usually about 12 months not including any location costs.
The mineum team raised about $60,000 and is currently paying about $5000 in dividends each month, giving it a ROI of 12 months.
Keeping your BTC would have been a better investment, but your ROI is what you would expect from mining.
Be carreful : your numbers are totally false.
Right numbers are :
ICO average price : 3002 sats (source : ANtho281)
Dividends from the first day to today, per MNMs (2016-july -> 2017-march = 9 months) : 236 sats, then an average of 236/9 = 26,22 sats/month
For a 12 months ROI, dividends should be 3002/12 = 250,17 sats/month
Real numbers are 10 times less !
And the real ROI is 3002/26,22 = 114,49 months =
9,54 years !!!
The performance of this mining farm is a disaster.
Even me I do much better with my little miners and a price of electricity 3 times more expensive.
Please, do your calculations accurately and with the real numbers.
And do not mislead others.