Well Mars Trek was made by Sonic - the BG is awesome and i can see why you kept it and its a pretty good game to play. Unfortunately - the cabinets are particle board and just crumble over time, but im guessing that you may know that already - value wise?? tough call mate - depends on many factors but for insurance id be putting a value of at least $350 on each. Paying for a BG is never really a problem - finding them is.
Can i come and scan that lot?