The primitive sites are 14$ a night, people do hike and camp I'm not sure how much it is or if it even costs
You can camp in the campground for a fee or there are some designated primitive camps on the hiking trail
You can camp in the camp grounds. You can find out about anything you need to know on the website here: https://www.travelok.com/state-parks/6415?CMP=PPC_G_SP123_RobbersCaveStatePark&utm_source=google&utm_medium=cpc&utm_campaign=State%20Parks%20(1-3)&utm_content=Robbers%20Cave%20State%20Park&gclid=CjwKCAjw5dnmBRACEiwAmMYGOQvPc7W6-RA2P2KGrh5YYANRUVgoDVyH1cxsh90n_8dSCLwKdR4xJRoCPk4QAvD_BwE
Yes you can camp
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