$/kWh vs $/min
Energy-based pricing vs time-based pricing at public chargers.
Per-kWh pricing charges for the energy you receive, similar to home electricity. It scales fairly with how much you actually charge.
Per-minute pricing charges for how long the cable is connected. A slow-charging car or a long taper above 80% SOC costs more on a per-minute plan even if you receive the same kWh.
Compare both models with your expected session length and charge rate before picking a station.