I don’t have home charging. I consider five factors :
Base tariff
Membership scheme tariffs
Car park based chargers
Idle time
Charge speed
I’m in london so we get very expensive BP chargers (80p) , cheaper (42p /kw) that are based in car parks where you must pay.
Best so far are pubs and hotels where charging is free.
Idle time is a bugger especially if the trigger point is less than the tariff in the car park.