$16 a night for dry camping with a fire pit, picnic table, and bathrooms with flush toilets. There are no showers. We arrived Sunday afternoon in late October, and most spots were empty. Make sure to walk up the hill behind the campground for a great view in all directions. Yes it is basically a gravel parking lot with no trees, but it looked better than Sunset campground across the street. It's a bit further back and higher elevation than the road, so you have a bit of a view.
No cell service with T-Mobile. Full bars but very slow service with Verizon, barely enough to use Google maps. Verizon also got service at Stovepipe Wells gas station, but otherwise a lot of the park is a dead zone.