My experience with Chargepoint in SoCal is that most all of them charge...you money...and your car
. The ones at my work charge $0.25/kwh and after 4 hours, an additional $0.05 per minute...yeah, they want you out. They used to just charge by time. Since SCE jacked up electricity rates for residential, it is less expensive for me to charge at work than at home, but not by too much.
Chargepoint at parking stalls at our city hall are a different story. I don't recall the price, but you'd have to be desperate to use it. But in general, I try not to depend on chargers other than ones at work and at home...and even if I plan to charge at work, I make sure I have enough energy to get home just in case the chargers are down or if they never become available...both have happened.
I've found some chargers, not necessarily chargepoint, that charge more than the equivalent in gas. Sustaining electric cars is an interesting topic. At first, when I got my Focus in 2012 [Thanks for pointing out my date mistake Scott], there were subsidies, free chargers, lower electricity prices, and HOV access. Although subsidies are back now, HOV access is only good for a few years from when you get your stickers in California, and free chargers are hard to find...and with so many EVs out there, if there is a free station, someone is already parked there. Electricity prices have trippled from what I was paying in 2010 and there is also talk of charging EV owners a tax per-mile. That just goes to the adage, "good things never last."