Man, I'd really be tempted. However, at $500 it's a little steep for a non-working cab. You have to consider what it would take to get it back to 100% operational. You're going to need to work on the monitor, you may need to work on the PCB, and it could have other issues that we don't know about at this point. If you end up sinking a whole lot more into the project, you could just wait until you find a working one for roughly the same price.
Star Wars is kind of like the last cab I'm really aggressively hunting though, so if it came down to it, I'd probably pay the money and try my hand at fixing it up.