I bought 2 CREE LED Light bars from Back Country LED Lights! They are super Bright and great quality and didn't cost me an arm and a leg! I run my boat pretty hard and hit a lot of things and the one of the grass rake has held up great! http://www.backcountryledlights.com/50-Cree-LED-Light-Bars-p/sl10-29.htm
I have purchased more than 10 light bars from ebay and have not had a problems with any of them. A 23" should cost about $65 to $70. My last one was a 17" with wiring kit, relay and switch for $50. Came with tinned wire too.