I posted a PDF of a spreadsheet I kept of campgrounds I stayed in during my long trip last year. It has price info and some comments. It is in the "Files" section "Miscellaneous" for downloading, labeled "2017_trip_summary".
NOTE: I tested downloading the file myself and couldn't; I got a "security token" error. But cpaharley was able to download it, so it wouldn't hurt to give it a shot if you're interested.