Around 4 cent power is above the wholesale power price most places. I agree the utilities have greater flexibility in the price for power. This issues is more of the other costs associated with the power, the transmission, distribution, utility profit, and taxes.
In many places the wholesale power market prices are typically between $20 and $35 a MWH. But after you add all the tariffs and other charges the prices raises significantly. So around 4 cents a KW is a decent price.
To get it lower requires other things be done to accomplish and it is not something a smaller farm would consider. Volume discounts or the upfront purchase of power generation equipment or the building of a transmission power line substation. The cost to do this is much greater and finding a company to host your equipment is a better choice most of the time.