Traditional rental car companies usually charge anywhere from $ 10 to $ 30 per day (or more) for car insurance coverage. (4autoinsurancequote.com)
We see returns at 2x that of traditional rental here, so I think people would want to do it, especially with someone else managing. (biggerpockets.com)
You can get a decent premium over traditional rentals with not a lot of extra work. (biggerpockets.com)