Hi STT Rural,
The price will be $3 per SM per month. You can find more information from a forum post about the commencement of CBRS services here.
The $0.02 charge you referenced may be confusion regariding the PAL auction. There will be a minimum bid of $0.02 per person per MHz in the county of the bid for each PAL block of 10MHz. For a county of 100,000 people the minimum bid for one PAL block would be ($0.02/person/MHz) x (100,000 people) x (10MHz) = $20,000