Monthly Revenue: Mined Earnings of $68.65*
Monthly Cost: 5.55 cents/kWh Pricing: $55.50
Monthly Profits: $13.15

Total Hosting Fees over 12-Mo. Period: $55.50 x 12 = $666.00
Total Paid Upfront: $55.50 x 6 = $333.00
Total 1st Year Profits: ($68.65 x 12) – ($55.50 x 12) = $157.80

ROI – 1st 12 Months: $157.80 / ($350.00 + $666.00) = 15.5%
Payback Period: ($350.00 / $13.15) = 26.6 months
* Mined Earnings / mo. of $68.65 taken from cryptocompare.com on 10/11/19