[ooterness]

Yes, there is a fee. The largest antennas (i.e., the absolutely gigantic 70 meter dishes) can be $5k per hour. Further discussion on StackOverflow [1] and the NASA MOCS guide [2].

[1] https://space.stackexchange.com/questions/21005/what-makes-t...

[2] https://deepspace.jpl.nasa.gov/files/6_NASA_MOCS_2014_10_01_...