Picked up a really NICE tron over the weekend for $600. Details and pics here:
http://www.thebrokenjoystick.com/arcade/tron-in-the-house/
http://www.thebrokenjoystick.com/arcade/tron-in-the-house/
http://www.thebrokenjoystick.com/arcade/tron-in-the-house/
http://www.thebrokenjoystick.com/arcade/tron-in-the-house/