oh yeah, those are good deals, but i was at best buy the other day picking up wario ware and i passed a stand of strategy guides. Half of them were selling far a penny! No catches, you didnt have to sign up for anything, they were juts being getten rid of. The only guide i can remember was Eternal Darkness. But there was alot of other good guides too. But some jerk before me (i would've done it too...) took every last one of the guides for only pennies, the clerk told me.
I picked up metroid prime at blockbuster for 20 too like you guys, i almost payed 50$ for it at K-Mart.