As of October 2015, prices for LED headlights range from $20 to $1,000. The cost varies significantly depending on the make and model of the car and whether custom headlights are needed.
Pep Boys Automotive Service Center offers LED bulbs for less than $20, as well as a variety of headlights. Amazon.com sells headlight conversion kits, LED bulbs and other do-it-yourself kits. CarID.com offers custom LED headlights built specifically for each vehicle. Prices for the custom headlights range from $50 to over $1,000.
LED headlights are brighter and use less power than standard halogen headlights. They also provide a warmer light than HID/Xenon headlights.