Anyone with any experience of these meters,where they can be got online preferably and price too,marina needs checking if you ask me,i think there robbing us for leccky!
Tried to buy direct in the past, they will supply but at the same price as you would pay the marina. When i questioned this i was told that the marinas get a baulk discount. I have also heard that if you use an alternative some marinas will not accept the meter readings without individual certification. Protectionism i think.
You could fit a domestic meter onboard if you have room, not sure of the cost of one of these though.