Best Buy Video Games Xbox 360 | 8K |

"Finding what you need?" a blue-shirted employee asked, appearing like a ghost from the shadows of the refrigerator aisle.

"Is this still the best one for co-op?" Leo asked, holding up the box.

It was 2007. The "New Releases" rack was a wall of legends: Halo 3 , BioShock , Mass Effect . Leo navigated the aisles like a scout, passing the wall of tube TVs and the clicking demo kiosks. He wasn’t looking for the new stuff, though; he was headed for the "Pre-Owned" bin, the bargain hunter’s gold mine.