We are in the middle of a 2 week trek out west. We stayed at KOA in Huntington, St. Louis, St. Mary's, Sheridan. Except for St. Mary which is at the doorstep of Glacier NP, we never paid more than $50 a night.
As a business traveler when not camping, I want quality consistency and similarly when rving I want the same and am willing to pay extra for it. Every one of the above KOA gave me available pull through sites, 50A service, easy on and off of an interstate, well manicured, clean facilities. That's what I want an am willing to pay for. Just my 2 cents.