Hi Carl, using the Polar Plus card (free 3 month intro, & then reg another card using the 6 month Peugeot intro code), the cost on those 150kW chargers is a flat 20.4 pence per kWh, 50kW Polar rapids are 15 pence and the 7kW posts are either 12 pence or free.
If you arrive at the charger with a very low state of charge (SOC), perhaps 10% area, you can get 100kW up to about 25% SOC, then it throttles to 75kW up to 50% SOC, then throttles to just over 50kW up to 72%. Then you need to make a decision on whether you leave for the next charger 100 miles away, or you stay & it throttles down to 25kW, and then gets even slower the nearer you approach 100% SOC. Of course, you charge to 80% then leave, having charged 10 to 80% in 1/2 hour. You’ve enjoyed the sandwich & coffee & taken care of the bladder.
On a normal 50kW rapid you’re looking at around 40 minutes to get to that 80%.
Use Zap Map to see what chargers are near you & what they charge. Zap Map can be set up to filter chargers by speeds, connector types (Tesla Superchargers aren’t much use to someone driving an e2008), companies, etc.