[Hugh R]

I use mine about every six weeks, and I park it next to the house with a sewer dump and a 50A electrical service.

Far cheaper to rent a few times/year. I don't tow a car, I rent-a-wreck if I need one at the destination. Tires every five years. It helps if you can start it and the generator every few weeks and move it back and forth a few feet to keep the tires round and from delaminating.