First place you bought your gaming supplies. Is it still around?
The one place that I used to buy most of my gaming products was Waldenbooks. I was even a member of their Otherworlds club. They closed up years ago. Some of the games and books that I bought at a Waldenbooks include:
World of Greyhawk boxed set
Shadowrun 1st edition
All of the Fighting Fantasy books
Plus a bunch of sci-fi books, comics, and magazines!