quite an interesting thread. would be good to know the chargepoint stations pricing structure for the one that op is using. see some that are near that address, but can't see the specific one that op is using. did some calculations and generally seems like the cost/hr is a little over $2/hr. Also calculated with the assumption that it's $1/hr for the first 4 hours, then $3/hr for each hour after that. it didn't line up with all the longer charge times, but it was pretty close for the 8 hrs ones. The real outlier are the 1h 48m and the 40m ones. The 40m one had a rate of almost $3.50/hr from the get go, while the 1h 48m one had a $2.55/hr rate.
This feels like I'm back in high school or college trying to figure out a math problem.
In any case, there has been some really good advice given in this thread and hopefully if cost is a concern for op, can save some $$ by adjusting charge schedule.