I've had m CBW for over 10 years now and it's in great shape. I've probably put more than 1600 games on my machine in the time I've owned it; I'm sure it's seen many more prior to me picking it up. For the most part however, CBW is not popular and it tends to be a very affordable DMD game as a result. I wouldn't expect too much of a premium for it and it's been lonely for so long maybe a public place where it can be played would be a good thing for this one.
Maybe bring it to the York show to show it off?
-Rob
-visit http://www.kahr.us to get my daughterboard that helps fix WPC pinball resets or for my Pinball 2000 H+V video sync combiner kit