Range from the cheapest Downlights installation £250 (MKE Contracts based in BT54) to the dearest Downlights installation £270 (Wright Electrical based in BT53).
Comparing electricians estimates for Downlights 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 installing downlights by posting a job to electricians in Bushmills.