740 USD will be the total including taxes. Today a Z9 mini manage 28 USD overclocked to 16000 sols with the BTC price around 6000. Is the risk really that high that i wont ROI on this investment ? The difficulty has to go up 8-9X for this to happend ? And im not even debating a price increase of BTC then. Even with an average of 5 USD per day the ROI is 5 months.
Am i being to optimistic here ?
Profit is dropping daily with over 7000 new Z9 minis now in the mining pools. In Sept we will see another 10,000 to 30,000 added. Within the next few months, look for the z9 maxi to drop. I think we will be very very lucky to see $5 a day profit for that period (Sept 2018 through February 2019).
But if you have the mining bug, go for it. That is not an expensive investment.