I bought roadside assistance for my RV through the insurer. I think it was $15 annually, and it covered "reasonable expense" for towing to a place for service.
On cars I have found the default service for my other insurance company and for AAA to be far less than I expected. After several bad experiences, my car insurer told me that I could just hire and outfit, and what their max payment would be. That made it easy.
I have to have that conversation with my RV insurer to see if something similar can be done with them.
The insurance based roadside assistance doesn't provide a mobile tech, it is mostly focused on changing tires, towing and jump starts, from my reading of it. Although they do also handle out of fuel and lockouts.
However for the lowest cost, consider your insurer. In NY, they cannot ding you for multiple calls in a year, which would be good if you have a rash of problems one year.