[quote name='bobartig']What's a TIV, and what have you not linked to in the above post?[/QUOTE]
TIV = Trade In Value. The amount of store credit (in dollars) that retailers will give you for turning in specific game titles. Amazon and Best Buy's TIVs are listed for the original edition of Red Dead Redemption in case someone was wanting to get rid of their copy and "upgrade" to the game of year edition, which contains additional content.