i have them on my CLK, as far as being worth the money, that just depends on how much you care about having your door sills glow. I paid $250 for mine with about $50 install because i was scared to mess with the wires. If you understand the wiring, its not hard to install, just cut and splice i believe. At night, they really do look good, everyone that gets in my car makes a comment about them, during the day you cant see it obviously. Im pretty sure that the real ///AMG illuminated door sills are much more expensive, i think mine are fake, but they look good. Im at college, so i have no camera to take pictures, but i believe there are still some pictures in the CLK forum, check the archives. Hope that helps.
Eric