I took a Drag Specialties Chrome Round Horn Cover and attached a Willie G Timing Cover. This really compliments the theme to my bike and it's something different than the standard "cowbell".
I did the same thing with an HD round cover and Willie G. Looking good!
There was a forum member on here about 2 years ago trying to sell them for $75.00 Someone else chimed in it was a $35.00 round horn cover and $15.00 Willie G stick-on. Guess which route I went. (disclaimer-prices are estimated from memory, I really do not remember actual costs but savings were substantial)