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Okay, no-one wants to buy it, so how about a trade? I'll trade for a keyboard. No MX reds or browns, no Cherry MY switches. I'm open to just about anything else; buckling spring, ML, rubber dome, USB, PS/2, MX, Kailh, whatever. If I like it I'll trade. Show me whatcha got...
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I have an Itac Professional Mouse-Trak trackball still in the unopened factory package for $75, shipping included. I have 3 other Itac trackballs & I just don't need this one.
It is the PS/2 model number B-5XXMP-XROHS
In the description on the website Itac call this a 4 button trackball - well, it's not. It's a 3 button trackball providing primary, secondary, & middle button functions. The fourth button is a speed toggle - pressing this button reduces the cursor speed for more accuracy & pressing it again returns to normal speed.
There is also a button-press procedure to reverse the right & left buttons so it works for lefties, too.
You can see some interior photos & a comparison to a CST trackball here...
http://deskthority.net/other-devices-f3/trackball-review-cst-vs-itac-t7391.htmlPM if interested
MOD EDIT: Removed moderation note.