You can routinely get ~2 c kWh in Chicago:
It doesn't include Transmission, distribution, taxes or whatever a "Capacity Charge" is.
The bill previous was 3.9.
The majority of those fees are fixed cost so don’t scale linearly with usage.
If you shut off your bitcoin miners during the warmest parts of the day, your capacity charge will go down.
Of course this is moot when you're not paying the bill, as this story says.
Hourly rates/smart meters were not yet available to consumers (commercial customers could get different plans, IIRC).