Good deal! I'm on my third time owning this game.. Everytime I sell it I immediately regret it -- a good sign it's a true keeper! I won't be selling again. Plus... It has Michael Ironside in it!
Don't be concerned about the dirt. I find the dirt on this game actually preserves it! I'm betting you find a minty playfield under there
Also, the #1 concern when buying a SST is the moving hopper bug mech. If that's broken you're kinda screwed as I don't believe there are any replacements out there.
Has anyone here done the Stereo upgrade? I want to do it but I suck at locating parts.. I wish there was a kit available (hint)