I'm a miner have 2 6970's and a 5830. I cover my electricity my trash and sewage bill all from selling BTC around 240 to 260 a month and I have enough left over to pay some on my newegg bill for the cost of the second rig I built for the dedicated 6970 setup. With the current prices I'm definitely not butt hurt as long as it's over 8 dollars I can still cover all costs. I pay .11c for first 200kwh's and .14c kwh after that and I run my central air during the day.
I also have a job so this is all fun and games for me in not hurting in anyway.