As I often tell people, RVing can be expensive, but doesn't need to be. Here are some of my expenses from last year.
The RV traveled a couple miles under 6,000 miles. I travelled in California, Arizona, New Mexico, Colorado, Nebraska, South Dakota, Minnesota, Wisconsin, Iowa, Kansas, Oklahoma and Texas... Going back through New Mexico and Arizona.
I paid $975 in camping fees. (That comes to $81.25/mo or $2.20/day)
Gas for the RV came to $1435 or $119.45/mo once broken down.
Propane costs were $79.79 or $6.65/mo.
MH maintenance was very low at $302 for the year, and that included one bigger expense. I budget $500-$1000 for that.
I realize my camping expenses are low because of workamping... But right now while I get my site for volunteering. I would have been boondocking this winter with also no cost and not having to work.
Car expenses... Gas was $300/year... $25/mo. Regular maintenance in 2016 was under $100.
Add in groceries, essentials, insurance, etc and I am still under $1000/mo total for 2016. I do not look at cost on my sightseeing, but rarely does it cost much and it is included in my staying at $1000 per month or less. That is where, if I want to do it, I fit it into the budget.