As others have noted renting a RV is expensive,another alternative is to buy used at a good price but there are downsides to that too,mostly condition and previous maintenance may not be up to par which can be expensive to remedy.
Another avenue is to look at the Rental Market,
Click Here for more on that,it is long but has a lot of good information.
Here you have a well maintained unit,it has to be,that will give you good value for your money. There are more than 70 happy owners of Former Rentals with very few problems and most put a lot of miles on them with no problems at all.