Wow... if that's the case, I'm gonna be living pretty cheaply..... LOL!
Seriously, though, I'd be willing to bet that there is some small correlation there, but for the most part, one's lifestyle will be determined by how they want to live...not how much their RV costs. I can see that if you have a $1M or better RV, you'd probably tend to be in more expensive RV resorts than in State Parks. And I suspect the cost of maintaining a $1M RV is much more than mine...but, again, I think lifestyle is dictated by desired circumstances and not the RV. The RV would be an indication of one's lifestyle, not the other way around.