Ok now this is where I'm going to have to be TOTALLY different from all you guys.
Firstly I never ever never buy a pre-played game ever. I just can't! I want the game to be brand spanking new still sealed in the original factory seal

This is what gives me pleasure. The excitement of opening it and seeing it in it's all new glory (I just like my new stuff)
I don't buy from retail stores either since I feel that most of their games (even though it's new) still feels secondhand since the seals are almost always broken (CNA, Game, L&L, Musica, Toys, Incredible, BT, etc.)...so I just buy online (it's cheaper anyway).
Now you must think I'm some rich kid but actually I'm far from it. I just never buy the latest titles. I'm probably what you call a back gamer since I usually hunt for the older cheaper A grade bargain titles

Except if it's a new game that I just can't resist.
Just look here for example: Xbox 360 (Online Shops)
The Darkness - R178
Command and Conquer 3: Tiberium Wars - R182
Bullet Witch - R209
Assassins Creed - R270
Test Drive Unlimited - R209
Gears of War - R270
Viva Pinata - R220
Burnout Paradise - R270
PGR3 - R199
Lord of the Rings: The Battle for Middle Earth II - R220
Eternal Sonata - R200
Dark Sector - R250
Rainbow Six Vegas - R200
Half-Life 2: The Orange Box - R250
Dead Rising - R180
Perfect Dark Zero - R260
F.E.A.R. Files - R180
The Elder Scrolls IV: Oblivion - R180
and many more....all these under R300...heck some are even under R200 so no worries here