Unless this has recently changed, to my knowledge, this is a free camp. However, you must reserve 3-5 days in advance by filling out their online form to get an email back from them with the code to unlock the entrance gate. Good luck!
It is definitely free. $0.00
You do have to make a reservation, though. No penalties for being a no-show, but it is best to be a good guest and keep the dates you select.
It is a big hunting camp so keep that in mind.
Enjoy your stay!!!