I bought 2 games from Namco before, I agree with sharidan, it's really not worth the hassle, customer service sucks, waiting times are way too long, and most of the time the games are really beat to hell. on the upside the prices are cheap but most of the time you get what you pay for.
So if they have something you want to keep, and sink some restore money into go ahead you'll be happy.
But if your looking for games to flip and make cash on, good luck, cause you will most likely have to spend more than you wanted to get them in good selling condition.
my 2Cents