I cleaned and tested 4 of them. They were in good condition to start with, just a little dusty. The balls cleaned easily with just dish soap and water. They are white, not faded or yellowed at all. I oiled all bearings and they all spin easily. I spun all the rollers with steel wool and a drill, they look like new. If you look closely and the light shines the right way some just barely show signs of wear. I mean JUST BARELY. I tested all the all of them with a ps2 mouse hack, and they all worked smoothly in all directions. All have Golden Tee 6 pin plug and ground wire. They all work excellently. I will sell these first 4 for $30 each plus shipping. On my scale they weigh just under 2lbs, so with a box and some peanuts or whatever I guess 3lbs to ship. I have more, just only cleaned and tested these 4. (Had to make a-friggen-nother mouse hack, as organization is not one of my skills.)
Sorry for the grain, pics are from my cell. That white line on the roller LOOKS worse than it is. Like I said, if anyone isn't happy, send it back and I will refund the purchase price.
Steve