I agree there is still some profit left at that rate. I just with "Lowest-Cost Miner Hosting:" as advertised was even cheaper.
If somewhere in the US can do 6 cent's or so I think they would find a LOT of business. But so far no one has gone to that extent.
We're working on a massive expansion, it will take several months. However, it will drastically lower our costs and in January 2016 we will be offering 6 cents/kwh to all customers, and even lower for bulk clients.
We'll make some big posts when our new site is ready.