How much does it cost to get married at the courthouse in Johnson County, KS? Is there a fee to pay the judge?

Our plans have fallen through for the "church wedding" and my fiance and I are sick to death with trying to make everything work in the timeframe we'd like. We know it costs $50 for the actual license, but were wondering if anyone knows how much it costs (if anything) to actually get married at the courthouse?? Can anyone help, please???