Have you priced RVs yet ?
If total cost is the over-riding factor, you need to consider a LOT of factors......not the least of which is gas mileage. Unless you can afford the Mercedes, you probably will get 8-10 MPG.
This could be $420 in gas, round trip.
Then, it is at least a 2 day trip; cost to overnight at a campground.
Then there are ongoing upkeep and maintenance.....and a parking place near to home if you don't have the space.
Things like this seldom can be "proved out" based on costs alone.
'07 Damon Outlaw 3611
CanAm Spyder in the "trunk"