I kinda doubt they have much backstock from those days as most of their stores cleared classic stuff out a number of years ago and Gamestop.com followed suit more recently. Similarly, I doubt they have buyers scooping up thrift store or garage sale finds. Most likely they will simply buy bulk used stock from a distributor or start a buy back program that lasts for a few months to build stock and then distribute it nationally to individual stores which is how they have always done things previously.