I have a Galaxian machine (full size cabinet) that I have owned for about a dozen years or so. It works fine, and I replaced the marque sign, the green plastic trim, the joystick, and the control panel label just after I bought it.
The cabinet artwork is pretty beat up. Overall, I would say the machine is in "fair" condition.
The problem is that it just doesn't get any play anymore and it is taking up room that I'd like for another pinball.
I just have no idea of it's value at this point. Any ideas?