As of August 13th:
360
Assassin's Creed - $14
Star Wars: Force Unleashed - $25
PS3
LOTR: Conquest = $15
Metal Gear Solid 4 (Reg Edition) - $18
Ninja Gaiden Sigma - $12
Ratchet and Clank: WoD - $15
Rock Band - $10
Soul Calibur 4 - $20
Wii:
Agatha Christie: Evil Under the Sun - $3