If you have any other questions, I'll gladly answer....
Did you measure your power consumption or estimated it? How much is kWh for you?
You claimed to mine every weekend, but how many weekends?
I mined for 8 weekends (although the last 6 were the ones that REALLY mattered). Yes we did measure the power consumption. Each computer cost us about $0.05 per day to run. I forget what the actual readings were, but at full load it was around 45 watts with the monitor off and yescrypt minerd running.