I got mine about 5 years ago and I paid $2800 for her. Here are a few things to look for in making your offer. Crate door. usually beat up. Crate pin (it holds the crate closed until multiball) that's usually missing. I've only seen 1 that was working properly. Spider hole. Usually bashed up or chipped. Cracked Boney beast ramp. Skill shot area, chipped or beat up.
Boogie men plastics at the bottom, usually broken. Spider on the backglass. make sure that works.
I had to rebuild the crate including a new door on mine, fix the broken Boney Beast Ramp, repair the spider in the back box, fix the coffin spring (it usually is weak or broken) roughly ~$200 extra just in parts. You can still get ramps and parts for her. and there are so many different things to add on that they took off the machine like the led kit for the dead heads, dancing boogiemen eyeball shooter rod.
For value, it's worth it to me since I'm a huge fan. I added a 250 watt subwoofer to her, a bunch of led's, a fan for the back box, a new boney beast ramp.
It's and easy game to play, not too complex, tons of fun at parties, and she holder her value. Plus, there were only 4028 ever made. so she's a little rare out in the wild.