Whoa! I bought Left 4 Dead at Target for $12.48 on clearance. Interestingly, they were also selling the game of the year edition of Left 4 Dead for $59.99, the only difference was that the GOTY edition includes the DLC for the game. Turns out the DLC for Left 4 Dead is completely free to download anyway. Hehe. Kind of funny.
Probably too late, but if anyone really wants this game, you might go to your local Target and browse the clearance aisle. Small chance you might find a stray copy or two that have yet to be snatched up.
EDIT: Just did a google search on "Left 4 Dead 12.48 target" just for kicks, and some people suggested asking the target employee to look behind the game of the year editions (they keep them behind glass) for the old regular editions. I guess there have been several cases were they stocked the GOTY editions over the regular ones. Since Target has everything computerized, if you are lucky enough to find a non GOTY edition of Left 4 Dead, it should be $12.48 regardless of whether it has a clearance sticker on it or not.