MGM has paid $400,000 against $800,000 for a pitch by Craig Titley based on a real story about a Chicago commodities trader who journeyed to Mongolia to find Genghis Khan’s buried treasure.Mark Platt Prods. and Zide/Perry Entertainment partners Warren Zide and Craig Perry are producing for the studio. Pic, tentatively titled “Genghis,” will tell the story of Chicago trader and Genghis Khan afficionado Maury Kravitz. With a ragtag band of amateur explorers, Kravitz found a burial site in Mongolia that could contain the conqueror’s remains and a trove of priceless artifacts. Project will be written in the vein of “Raiders of the Lost Ark” and “City Slickers.” The studio is negotiating for Kravitz’s life rights. Titley is repped by WMA.