Ramp fees for Jets

Hello,

I'm on the board of our local flying club and we manage the GA ramp.

I am wondering if people can share with me what their airport (or other
airports they've been to) are charge for overnight fees for jets. We
have a small overnight fee for planes (which i believe is waived if
they fuel up)... but I'm just doing some research as to what we should
be charging the Citations and G-Vs that come in and park.

Thanks,

-dr