It sounds as though it will be a standard install of the carger, so there will be no additional cost installing it. The only small issue I see is Ohme chargers come with 5 meters of tethered cable, so there would be a small additional cost of fitting a 7.5m tethered cable. The other option is to request an Easee one charger with notability as they come with a 7.5m tethered cable 🙂