My advise would be to have him make a list of games that typically sell for $3,000 - $4,000. My list would include games like Baywatch, Last Action Hero, Demolition Man, Stargate, Terminator 2, Black Rose, Black Knight 2000, Johnny Mnemonic, Batman Forever, NBA Fastbreak, Who Dunnit, Jurassic Park, World Cup Soccer, Judge Dredd, The Getaway, Dirty Harry, Tales from the Crypt, Road Show, Doctor Who, Bram Stoker's Dracula, Fish Tales, Road Show, etc. The more games he can add to that list of acceptable games the better his chances. If anything comes up from that list be ready to run out the door with cash in hand.
If he really wants something now, I'd try to track down a Stars, Meteor, or Flash. They are currently the best bang for your buck, IMHO.