Range from the cheapest Electric shower installation £170 (Goldsmith & Sons based in SS17) to the dearest Electric shower installation £500 (KPC Electrical Ltd based in CM11).
Comparing electricians estimates for Electric shower installation gives you an idea of who will be better value but the best way to compare costs is to get actual quotes.
What to do - Get rates and quotes for a new electric shower installation by posting your job to electricians in SS13.