[flipper]

It's all incredibly bizarre. Not just the triple pricing scheme card lottery.... but the fact that 50kw rapids have been plonked in locations where the user may well want to park up for a lot longer than an hour.

And FIFTEEN QUID!??!!!

£15 is Chargemaster/Polar's standard rate for Rapid chargers using Polar Instant. Specifically it's £7.50 per 30 minutes (or part thereof, it seems).
£7 per 30 minutes (£7 for the first 30, then pro-rata) is the Polar standard tariff - but you have to pay £20/year to get that.