I have a well used one in the office - it is used only for office work - not gaming. I am not sure why we have one in the office. I was actually using it - until I got a new track ball. It is actually just sitting on my desk.
I can see if I can "junk" it and send it to you "no-charge" - just pay for the shipping. Of course that is if you want a used one. If you do - let me know and I will check if I can "junk" it since no one is using it.