Selling it all together, not individually.
I have:
Wico trackball, no optics, good rollors.
Happ trackball, has optics, bad rollors.
The two balls that came with those, a old white 3" ball and a red translucent 3"
I'm giving the people here first dibs.
Make an offer.
In a week I'm ebaying it if I don't get what I want....