I can never believe how so many of you got most of your games used over the years (other than online). Employees were hogging the Dragon Quests, Final Fantasys, and Chrono Triggers even way back when they were Babbages and Electronic Boutique.
Come to think of I don't think I've seen more than a few good offering in those used game bins in my ENTIRE life. They never had what I was looking for. I do have that one good memory of getting my crown jewel Wild Arms 1 for a few bucks.
I guess it's all in the area you live.
Personally, when I worked for Gamestop back in 2006, we had a TON of good PSX games (they'd already gotten rid of NES/SNES by the time I worked there). And that was AFTER the employees (myself included) took their pick of the litter. I personally got Final Fantasy IX, Wild Arms 2, Persona 2 Eternal Punishment, and many other great PSX games for pretty cheap. And we always had a few extra copies of those kinda things on the shelves.
It does really depend on the area. We just kept getting random shipments filled with PSX games, though. 'course, I also grabbed a copy of Suikoden II (no box, no manual, scratched to hell) for $50 (have a Game Doctor, so I fixed it, and it works), and a copy of Paper Mario (cart only) for $5.