I never buy those things. For $7,300 you can pay for a lot of repairs and towing out of your pocket. Freightliner repair costs are high, and those are huge wheels. You really cannot change them yourself without big tools.
Have you contacted your insurance company. Many have roadside assistance and towing. Also check your cell company. Mine has towing and roadside assistance. When I spoke with them a few years back about it, they stated it did not matter what I was driving, it was covered. But I was not thinking Seneca at the time. There area also a lot of other 3rd party roadside assistance programs out there.
Edit: Quick google search and here is one that decent, at half the price;
https://www.roadsidemasters.com/signup-bus.php