If the miners were to be Whatsminer m3 or m3x would $150 per unit be a good price? Electricity over here is about $0.04 per kW. My calculations said I would be making about $2,600 a month with 60 machines.
In theory and based on the current figures you shuold be able to make a net profit of $75 a month per miner, which means ROI will be 2 months, which is just about perfect, but since these numbers do change, you would never know, however, $150 is indeed a great deal given the fact that they go above for above $200 in China.