Range from the cheapest replacement of a toilet float valve £25 (EWG Plumbing Heating & Electrical based in G33) to the dearest replacement of a float valve £70 (1Point Plumbing And Heating Services based in G42).
Comparing plumbers estimates for replacing a toilet float valve in the cistern tank 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 to replace a toilet float valve in G21 by posting a job with HaMuch and we will send it to plumbers in G21.