Usually Ebay is a good place to start. Remember there are old desktop clearance sales all the time for 99 buck desktops. I didn't sell the office's 5+ year old desktops. Donated them all away so I didn't have to hear about warranty claims. Still you bet someone wanted us to fix the free desktop. Didn't happen.
I wanted to know if someone could point me in a direction to find out what this old canon computer towers is worth