Hi Bob -
I have traveled over 130,000 miles around the US via motorhome visiting some 46 states. I have travelogues of my trips with lots of photos on my website, fishwisher.com. Someone mentioned that you don't need a $200,000 motorhome, but how about $40,000 for everything you need? Or perhaps rent one.
If you compare the cost of driving by car or van and eating in restaurants and staying in motels to RVing, there simply is no comparison. I rarely stay at a RV park and almost always stay at a Walmart - for free. They are virtually everywhere. The vast majority of them welcome RVers. They are safe because every Walmart has a camera on every inch of their lot, and many have have security patrols as well - and the bad element knows that. Unlike an RV park, if you discover that you parked in a spot you don't like or have a noisy neighbor, you can move to another area. Most anything you may need is likely in the store where the prices are very low and you avoid the travel plazas that are notoriously high priced.
You can buy very good, low mileage, used RVs for under $50,000 or rent one but I have no knowledge of the rental game. I prefer the class A coach for the room and the fantastic view from the humongous windows. That view just can't be beat. A 30 to 32 footer will have all you need for comfort including hot and cold running water, shower, air conditioner, heater, TV, couch, stove, microwave, fridge, dining table, etc. Check the size of holding tanks if you decide to RV as they vary greatly. My coach has 67 fresh, 41 black, and 57 gray. I shower daily and can go four or five days before having to dump. When I do, some rest areas are equipped with free RV dumps, or you may have to pay $10 to an RV park to dump.
I have had only gas coaches, finding it unnecessary to spend the extra money on diesel. My 31 footer has delivered 7.5 MPG average with regular gas over thousands of miles. While driving 300 miles at that MPG will cost about $100 nowadays, you will save much more by eating your own food aboard and not needing to pay for a motel. You will have your own bed, sheets, etc and not have to wonder if your room was cleaned properly.
Whoa. I got carried away. I hope this info is helpful.
- Dale