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Battle.net has some deals up at their site.
Diablo III: Reaper of Souls $20
Diablo III: Reaper of Souls Digital Deluxe Edition $40
StarCraft II: Wings of Liberty $10
StarCraft II: Heart of the Swarm $10
StarCraft II: Heart of the Swarm Digital Deluxe Edition $25
World of Warcraft $5