Read our Privacy noticeProminent Nintendo game collector Jason Ganos was stopped in his tracks when a pop culture shop owner in Wisconsin revealed he possessed a long-forgotten box of Super Mario cartridges sitting in storage. (Jason Ganos/Nintendo Wire via AP) ( Jason Ganos/Nintendo Wire )“It’s like pulling out like a Holy Grail,” Ganos said, later adding, “They’re gorgeous.” Braun mentioned the box of Mario cartridges that had been sitting in storage for years. There had never been a cartridge rated a perfect 10 at Professional Sports Authenticator video games, Ganos said. Ultrarare video game cartridges, especially ones with unique production history, can be sold for six- to seven-figure prices in the collector’s market.