[Toasty the Baker]

Hey guys! I got this signed and numbered map of Pandora on eBay for cheap. Just wanted to know if any of you knew more about it and maybe a potential value? Also maybe who signed it? The guy said it was given to him at either a GameStop Manager's Conference or at a Gearbox/2K PAX booth. He couldn't remember. The paper is more like Giclee print than glossy lithograph paper. It is 24" x 30".