95% of my charging is done using Elli, Costs per KW - Shell, BP Pulse, Osprey £0.35p - Ionity £0.28p and the monthly charge of £12.99
Used 600 KWH last month so adds approx £0.02 to the per KW rate, normally use around 800 KWH but was a quiet month
Works well for me and still use Superchargers...