There's no electrical industry standard way of charging so this is a general business question as opposed to an electrical one. I'm not sure what this is 'Replace splice and repair cable equipment Q 1 unit R1209.78 = R1209.78 ', I'd ask for clarification. It's very expensive if it's just a cable joint but you can ask him what the materials are because they're under warranty so you need to know.

As for his labour charges, can't really make head or tail of his explanation so I don't know if it's expensive. How many hours did he spend on site in total?