Last October we took a 10 day 1700 mile trip to see family. I had made a spreadsheet a few years ago that let's me plug in miles, hotel cost, campground cost, fuel cost etc. and I figured it cost us $100 extra at $5 a gallon diesel prices to sleep in our own bed every night.
I don't include food because you have to eat anyway, and we might find a place we want to eat at instead of cooking in the 5er.
For us the 5er is our preferred way to go, but if you want to stay in a motel it's nearly equal cost.
