I'd prefer it if someone could either validate my findings or point out where I'm mistaken, but I'm glad I did it because I'm getting ready for our annual trip and want to know where the cheapest chargers are near our overnight stop. We are not in a position to consider subscription suggestions, so please don't.
There is no shortage of chargers, and speeds aren't an issue; the problem is, of course, the cost. In my opinion, the easiest charging session will likely cost you more than you bargained for. It seems like there are a lot of hurdles to jump through in order to compare convenience with cost, even after all these years: different prices in different apps, upfront costs to fund the app that you might never use, numerous providers with different terms and conditions, and parking lots that won't let you exit to use the restroom or do anything else.