Also, seriously make it a 3 day auction the first time around. You DO NOT want to waffle around with a 10 day auction that doesn't sell, and then be forced to relist a 3 day auction that will end on christmas eve.
List it 3 day at $1000, then if it doesn't sell, then relist it 3 day no reserve at $500. Be sure to state that all rom files will be removed (but don't actually do it), and also state that you will personally help set it up in the case of a local sale. It will almost certainly be local anyway, too late to really get freight shipped in time for christmas.
Arcade games are very seasonal when it comes to value. The value of that game is going to drop dramatically the day after christmas, and then drop a bunch more between then and next september (at which point the value will quickly ramp up as christmas approaches again).
Or basically, september to christmas is the only time to sell games, spring and summer are the only time to buy them.
Also, converted Mame cabs also tend to sell for a lot more than home made cabinets. Home made cabinets are much harder to sell because if this person isn't there, then they can't really see what kind of build quality you did (and no offense to anyone, but I have seen some terrible looking homebuilt cabinets that cost some of you guys $1000s to make), and they are harder to sell in person because they CAN see the build job you did.
Anyway, you can never really compete on price building your own vs the guys who convert. The costs are just too high.