We almost never just crash for the night but if we were, a truck stop or walmart would be a good option. Then again there are options cheaper than $36/night if you just want someplace with electicity to crash for the night.
I've had/seen enough bad experiences with supposed local experts that I'll struggle thru parking myself.
- We were staying in a nice place with pull thru spots for a week. Shortly after we pulled in, they led a trailer into the spot next to us. The "local expert" proceeded to stand in front directing him as the side of the trailer slid along a tree. Three days later, the local expert led another trailer into the same site and directed him such they they also slid along the same tree.
- I've had several try to back me in and if I followed we would have hit something (trees, posts, picknick tables).
- The one time we had an issue, the "local expert" decided to walk along with his arm litterally on my open window directing me back. Unfortunately there was a mound the passenger side and since he was blocking my mirror, I tapped the overhang on the truck.
- No thanks to assistance.
As far as parks needing to provide cheap sites, run the numbers some time. When you start adding things up, there is little gain from giving it away too cheap. Also, you have the issue of drawing in the proverbial trailer park trash which runs off the folks who would pay for the nicer spots.