Lots of variables:
- What is the campground like? Is it trailerpark trash or a nice community?
- Do you "buy" a spot vs just rent for the season?
- Do you mind towing? Will you tow at all?
We probably would never "buy" a site. Seen too many people do that and then life changes and they can't sell the site. This summer and last, life got in the way and it's just not convenient to stay on the move, so we rented a seasonal site for the summer.
We are still in the RV for 4-5months, so definitely works out much cheaper than nightly site rentals even with a small electric bill (and we don't hesitate to use the air/con).
Biggest issue is resisting the pressure to build decks and other add-ons. Also, we are expected to mow our lot. The park does supply a push mower and it only takes 10 min but it's one of the things I loved getting away from by moving to the traveling lifestyle.
One thing I do dislike is we have made a lot of friends...but since they are all there, every weekend...you start getting drama...so and so said this or his stuff is encroaching on my lot...
If a place looks good, try renting for a season. I would hold off buying for a at least a year maybe even 2-3yrs to see if it gets old.