I never played there or anything, but even if he sold it to that store, it also might have ended up with me. I drove around to every place that had in-store play from New Brunswick or so and south buying up all Type I/Vintage playables from people and the vendors themselves. Sometimes store owners would save that stuff for me and want a bunch of the new stuff they could flip quickly for guaranteed profit or would give me a list of what they want for trade. The one thing I learned early on from sports cards was to stop chasing what everyone else wanted at the time or artificially rare and start squirreling away what was actually rare and useful to someone.
There was one GenCon where me and a couple of friends cracked some cases of boosters, sent one guy on a plane, and traded strictly brand new Weatherlight rares for ~100 pieces of power, Beta played cards, and hundreds of duals. I distinctly remember Abeyance was traded only for Lotuses because there was an incorrect interpretation of the rules that made people think Abeyance was a Time Walk that drew a card too. He had people chasing him down to make that deal. Then he got home and we split it all up evenly. Everything is a relationship business.