Best Buy or EB. EB sells used games, but they're not much cheaper than brand new. But since you're somewhere further east, I'm not sure if there is an EB or Best Buy near you.
I can't help you with PS2 games since I don't have one. Everquest is coming out soon, so that might be something you may want to look at.
lots of good titles are out on the best sellers list now. If you dont have some of these already they are good choices. And your local ebx if you have one is good for a couple of decent deals.