anyone know an average monthly electric bill running this unit 27/7 for a month.
Not sure how you are going to run it 27 hours a day but it depends on the model. ASICs efficiency at the wall varies from ~8 J/GH to ~0.8 J/GH.
So 30* 8 * 24 * 30 /1000 = 172 kWh on the high end to as little as 10% of that.