I'll second much of what the others have said. Fulltimers and longtimers typically do not pay daily rates - they stay long enough to get at least some longer term discounts, and they don't always stay in high-end places. Campsites cost $300-$900 per month depending on location, season and amenities included. Where you fall in that range depends on you. Sometimes they find friends to visit and a week or two of "camping" might be had for the cost of a dinner in a restaurant or a contribution toward the electric bill.
If your motivation for RVing was to save money, you can pretty much forget that. If your choice of abode put you in the $1000/month mortgage payment group, then you will probably spend at least that much on your RV home, plus campsite, fuel and vehicle maintenance costs as well. You can buy an old, inexpensive rig and stay in less-than-pristine campgrounds, but you could have the same low-budget lifestyle without getting an RV at all. Assuming you maintain a similar living standard to what you now enjoy, the RV is not going to save you money. What it WILL do is enable you to move around at whim, see what numerous other places have to offer (good and bad), and meet many new people.