We are just under $800 a month. However, for 3 or 4 months in the summer we use a large site at a nice CG in the central states that is only $325 a month (less than $11 a day). It includes all utilities.
What drives our average up is staying in an expensive RV Resort in Florida all winter plus some of our CG fees while traveling the rest of the year.
We have friends that spend much less. Their annual average is around $600 a month. They don't do much traveling and their CG stays are 3 months or longer.