Hello,
I have a white 3 inch Betson Imperial trackball with a PS/2 connection and 3 buttons (that serve as mouse buttons) that is for sale. It also includes a metal mounting plate. It is tested and fully working. I tested it under Windows XP and Gentoo Linux and it is recognised as a PS/2 mouse. I originally bought it from Ebay for around 50 plus shipping (I don't remember the exact amount). I will take $40.00 plus the actual cost of shipping if anyone is interested. I also have a separate 3 inch translucent blue ball made by Happ. I will change out the white trackball with this one for an additional $10.00 ($50.00 plus shipping) or I will sell it separately for $15 plus cost of shipping.
I might be agreeable to a trade as well. This trackball is collecting duct in my closet and I am leaning towards building a cocktail instead of an upright so I wont be able to use it.
Thanks for looking,
--Dweebs0r