I am selling a 3" used Translucent Red Trackball(EDIT:Please note that when unlit it appears orange, but when lightsource is present it looks red, see pictures below). I am switching it out for a white one to match the rest of my control panel. There is wear on the ball, tiny little dings and scratches, but still very nice and smooth. I am looking for $15 for ball(That includes shipping in the US). Note that I am only selling the ball, not the rest of the trackball assembly. PM me if you are interested, I will entertain other offers, if not I will keep it around for a future project. Thanks, Raleigh