Our startup costs for full timing

We have fulltimed with a diesel truck for many years. When we travel we spend on average $140 for a tank of gas which will pull our 32 foot 5th wheel about 450 miles. Even if we are sitting still for a few months we will fill the tank at least twice in a month so we can go sightseeing, so that comes to at least $280 a month just to stay put. People need to have realistic numbers so they can truly judge if this lifestyle is affordable for them. I never came across a campground cheaper than $300 a month. The cheaper ones usually don't offer any many amenities. We would go bike riding or hiking wherever we visit. Both activities are free but usually involve using fuel to get to a certain area to explore. Personally I wouldn't think this lifestyle is great if I could only afford to sit in the 5th wheel at a crummy rv resort trying to live on little or nothing. I just want people to be realistic that it is kind of an expensive lifestyle, but anything worth doing does costs money. It's a wonderful lifestyle but can't be done comfortably on less than $5,000 a month. $5,000 would be a stretch if people are traveling every few days unless you want to park in a Walmart parking lot or truck stop.