Considering this life! How to figure out cost per month???

If you Google "fulltime RV" or "cost to fulltime RV," you'll find lots of bloggers who describe their experiences and expenses for fulltime RVing. As everyone has said, it can vary a lot based on the choices you make.

There are a lot of roadschooling families who blog, too, who describe how that lifestyle works out for them.

You can get a general feel for the lifestyle by reading. There are lots of families doing it, but it definitely depends on knowing your personality and the personality of your kids.